{"product_id":"patikil-40-x-4-magnetic-fireplace-draft-stopper-4-pcs-fireplace-vent-cover-indoor-chimney-draft-blocker-to-block-cold-air-prevent-heat-loss-black-brown","title":"PATIKIL 40\" x 4\" Magnetic Fireplace Draft Stopper, 4 Pcs Fireplace Vent Cover Indoor Chimney Draft Blocker to Block Cold Air Prevent Heat Loss, Black Brown","description":"\u003cstyle\u003e.aplus-img{display:block!important;margin:0!important;padding:0!important;border:0!important;max-width:100%!important;height:auto!important;line-height:0!important;font-size:0!important;vertical-align:top!important}.aplus-img+.aplus-img{margin-top:0!important;margin-bottom:0!important}.aplus-wrap{line-height:0!important;font-size:0!important;margin:0!important;padding:0!important;display:block!important}\u003c\/style\u003e\u003cdiv id=\"v-about-wrap\"\u003e\u003c\/div\u003e\u003c!-- DBG1_A_descLen=0 --\u003e\u003c!-- DBG2_B_descLen=131 --\u003e\u003cscript id=\"v-gallery-js\"\u003e(function(){var m={\"47340166283433\":[\"7101KQbtSdL._AC_SL1500\",\"61N4bqg-V7L._AC_SL1500\",\"612DdSYarVL._AC_SL1500\",\"61Hzr4wf_4L._AC_SL1500\",\"71rHd4JB3TL._AC_SL1500\",\"71etYfXaquL._AC_SL1500\"],\"47340166250665\":[\"61heNYV8lRL._AC_SL1500\",\"614DAmhEqUL._AC_SL1500\",\"615h5ygwMLL._AC_SL1500\",\"71XVgprIh8L._AC_SL1500\",\"71Jp4MkYtLL._AC_SL1500\",\"7101KQbtSdL._AC_SL1500\"]};function fg(entries){var fps=[],ids=[];entries.forEach(function(e){if(e.indexOf(\"__id__\")===0)ids.push(e.slice(6));else fps.push(e);});if(fps.length===0)return;function mImg(c){var s=c.tagName===\"IMG\"?(c.getAttribute(\"src\")||c.getAttribute(\"data-src\")||\"\"):\"\";if(s\u0026\u0026fps.some(function(f){return s.indexOf(f)\u003e=0;}))return true;var imgs=c.querySelectorAll(\"img\");for(var i=0;i\u003cimgs.length;i++){s=imgs[i].getAttribute(\"src\")||imgs[i].getAttribute(\"data-src\")||\"\";if(fps.some(function(f){return s.indexOf(f)\u003e=0;}))return true;}return false;}var tg=document.querySelector(\"[id^='GalleryThumbnails']\");var tli=tg?tg.querySelectorAll(\"li\"):[];if(tli.length\u003e0){var anyT=false,firstT=null;tli.forEach(function(li){if(mImg(li)){anyT=true;if(!firstT)firstT=li;}});if(!anyT)return;tli.forEach(function(li){li.style.display=mImg(li)?\"\":\"none\";});if(firstT){var bt=firstT.querySelector(\"button\");if(bt)setTimeout(function(){bt.click();},100);}return;}var tb=document.querySelectorAll(\"button[data-target]\");if(tb.length\u003e0){var anyB=false,firstB=null;tb.forEach(function(b){var mid=(b.getAttribute(\"data-target\")||\"\").split(\"-\").pop();if(mImg(b)||ids.indexOf(mid)\u003e=0){anyB=true;if(!firstB)firstB=b;}});if(!anyB)return;tb.forEach(function(b){var mid=(b.getAttribute(\"data-target\")||\"\").split(\"-\").pop();var ok=mImg(b)||ids.indexOf(mid)\u003e=0;var li=b.closest(\"li\");if(li)li.style.display=ok?\"\":\"none\";});if(firstB){var bb=firstB;setTimeout(function(){bb.click();},100);}return;}var me=document.querySelectorAll(\"li[data-media-id]\");if(me.length\u003e0){var anyM=false;me.forEach(function(el){if(mImg(el))anyM=true;});if(!anyM)return;me.forEach(function(el){el.style.display=mImg(el)?\"\":\"none\";});return;}var anyF=false;document.querySelectorAll(\"img\").forEach(function(img){var s=img.getAttribute(\"src\")||img.getAttribute(\"data-src\")||\"\";if(s.indexOf(\"\/files\/\")\u003e=0\u0026\u0026fps.some(function(f){return s.indexOf(f)\u003e=0;}))anyF=true;});if(!anyF)return;document.querySelectorAll(\"img\").forEach(function(img){var s=img.getAttribute(\"src\")||img.getAttribute(\"data-src\")||\"\";if(s.indexOf(\"\/files\/\")\u003c0)return;img.style.display=fps.some(function(f){return s.indexOf(f)\u003e=0;})?\"\":\"none\";});}function getV(){var u=new URLSearchParams(location.search).get(\"variant\");if(u\u0026\u0026m[u])return u;var e=document.querySelector(\"input[name=id]\");if(e\u0026\u0026m[e.value])return e.value;var k=Object.keys(m);return k.length?k[0]:null;}function run(){var v=getV();if(!v)return;var e=m[v];if(e\u0026\u0026e.length)fg(e);}document.addEventListener(\"change\",function(){setTimeout(run,50);});document.addEventListener(\"variant:change\",run);(function(){function chk(){setTimeout(run,80);}var _pr=history.pushState;history.pushState=function(){_pr.apply(this,arguments);chk();};var _rr=history.replaceState;history.replaceState=function(){_rr.apply(this,arguments);chk();};window.addEventListener(\"popstate\",chk);})();(function(){var lv=null;function poll(){var v=getV();if(v\u0026\u0026v!==lv){lv=v;run();}}var iv=setInterval(poll,300);setTimeout(function(){clearInterval(iv);},30000);})();run();window.addEventListener(\"load\",function(){setTimeout(run,300);});setTimeout(run,500);setTimeout(run,1500);})();\u003c\/script\u003e\u003cscript type=\"application\/json\" id=\"about-details-data\"\u003e{\"47340166283433\":\"\u003ch4\u003eAbout This Item\u003c\/h4\u003e\u003cul class=\\\"about-this-item\\\"\u003e\u003cli\u003eSpecification: Color: Black Brown; Material: Rubber Magnetic; Overall Size: 1016 x 101.6 x 1 mm \/ 40 x 4 x 0.04 inch (L*W*T); Packing List: 4 x Magnetic Fireplace Blocker Covers\u003c\/li\u003e\u003cli\u003eAdvantage: 1. This fireplace vent screen allows you to cut down energy consumption by reducing the heat lost, thus allowing you to save utility bills. 2. Improved insulation, stopping dust and pollen from entering the room when the fireplace stops working and avoiding unnecessary cleaning. 3. Wide range of applications, the magnetic cover fits wood burning fireplace, gas fireplace, vents and grilles of HVAC system, RV etc.\u003c\/li\u003e\u003cli\u003eInstruction: Easy to use, attach the magnetic fireplace vent cover to your fireplace vents and adjust its position properly to make sure the vent is fully covered. Our magnetic fireplace draft shield can be easily trimmed with scissors to fit your vents of different sizes and shapes.\u003c\/li\u003e\u003cli\u003eApplication: This magnetic fireplace draft blocker is used to stop unwanted cold\/hot air, pollen and dust from entering you home through fireplace vent. It's made of magnetic rubber with powerful magnetism, it can be firmly attached to your metal fireplace vent and won't fall off easily. In winter, this fireplace draft stopper can effectively keep cold air out to prevent heat loss. In summer, this fireplace vent cover can be used to keep hot and humid air out.\u003c\/li\u003e\u003cli\u003eNOTE: 1. Remove the draft stopper before using your fireplace and use it only after the fireplace is cooling down because the high temperature will reduce magnetism. 2. Check whether your fireplace vent can absorb with magnets, normally, it is applicable as long as your vent is made of metal. 3. Please confirm the size of your fireplace vent before purchasing to make sure you order the most suitable one.\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eProduct Details\u003c\/h4\u003e\u003ctable class=\\\"product-overview\\\"\u003e\u003ctbody\u003e\u003ctr\u003e\u003cth\u003eBrand\u003c\/th\u003e\u003ctd\u003ePATIKIL\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eMaterial\u003c\/th\u003e\u003ctd\u003eMetal\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eColor\u003c\/th\u003e\u003ctd\u003eBlack\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eProduct Dimensions\u003c\/th\u003e\u003ctd\u003e40\\\"L x 4\\\"W\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eFinish Type\u003c\/th\u003e\u003ctd\u003ePainted, Powder Coated\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\u003ch4\u003eProduct Description\u003c\/h4\u003e\u003ch5\u003eProduct description\u003c\/h5\u003e\u003cdiv style=\\\"display:flex;flex-wrap:wrap;gap:0;margin:0;padding:0;line-height:0;font-size:0;\\\"\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/edbbf01f-2256-4769-8351-46fa98ded291.__CR0,0,600,180_PT0_SX600_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/597220e5-fee2-4c3f-bf2e-db4c8c5a1a53.__CR0,0,970,300_PT0_SX970_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/2334a132-322f-4d1b-b689-128b510becf5.__CR0,0,970,600_PT0_SX970_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003c\/div\u003e\u003ch5\u003eAll Season Use\u003c\/h5\u003e\u003cp\u003eThis magnetic fireplace draft blocker is used to stop unwanted cold\/hot air, pollen and dust from entering you home through fireplace vent. It\u0026#039;s made of magnetic rubber with powerful magnetism, it can be firmly attached to your metal fireplace vent and won\u0026#039;t fall off easily. In winter, this fireplace draft stopper can effectively keep cold air out to prevent heat loss. In summer, this fireplace vent cover can be used to keep hot and humid air out. In addition, this magnetic cover also suitable for floor, wall, ceiling vents and grilles of HVAC system or RV etc. where can absorb to magnetic materials.\u003c\/p\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/aa5fbaaa-50ee-4eee-b275-8bd1b69c6164.__CR0,0,600,600_PT0_SX300_V1___.jpg\\\" class=\\\"aplus-img\\\" style=\\\"max-width:100%;height:auto;display:block;margin:0!important;padding:0!important;border:0;vertical-align:top;line-height:0;font-size:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003ch5\u003eStrong Magnetism\u003c\/h5\u003e\u003cp\u003eMade of rubber magnetic material with strong magnetism and toughness, it can be firmly attach to your metal fireplace vent and won\u0026#039;t fall off easily.\u003c\/p\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/fdc10027-4681-4671-a6ca-925ca39820cb.__CR0,0,600,600_PT0_SX300_V1___.jpg\\\" class=\\\"aplus-img\\\" style=\\\"max-width:100%;height:auto;display:block;margin:0!important;padding:0!important;border:0;vertical-align:top;line-height:0;font-size:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003ch5\u003eCut to Fit Your Vents\u003c\/h5\u003e\u003cp\u003eOur magnetic fireplace draft shield can be trimmed with scissors to fit your vents of different sizes and shapes.\u003c\/p\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/4b236d87-b1b7-4f76-b4cd-2307caf1d889.__CR0,0,600,600_PT0_SX300_V1___.jpg\\\" class=\\\"aplus-img\\\" style=\\\"max-width:100%;height:auto;display:block;margin:0!important;padding:0!important;border:0;vertical-align:top;line-height:0;font-size:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003ch5\u003eWaterproof\u003c\/h5\u003e\u003cp\u003eIt\u0026#039;s waterproof, clean the dust on its surface with a damp cloth after using for a long time.\u003c\/p\u003e\u003cp\u003eSpecification Color: Black Material: Magnetic Rubber Overall Size: 914.4 x 101.6 x 1mm\/36 x 4 x 0.04 inch (L*W*T)\/1016 x 152.4 x 1mm\/40 x 6 x 0.04 inch (L*W*T) Packing List: 2 x Fireplace Draft Stoppers\/4 x Fireplace Draft Stoppers\u003c\/p\u003e\u003cp\u003e1. This fireplace vent screen allows you to cut down energy consumption by reducing the heat lost, thus allowing you to save utility bills.\u003c\/p\u003e\u003cp\u003e2. Improved insulation, stopping dust and pollen from entering the room when the fireplace stops working and avoiding unnecessary cleaning.\u003c\/p\u003e\u003cp\u003eEasy to use, the fireplace magnetic vent cover has two different sides, one side is a matte surface (non-magnetic), and the other side is a smooth shiny  surface (magnetic). After the fireplace has cooled down, attach the magnetic fireplace vent cover to your fireplace vents and adjust its position properly to make sure the vent is fully covered. Trim the magnetic fireplace cover with scissor to fit your vents of different sizes and shapes.The magnetic vent covers come in rolls, to improve its performance, it is better to flatten before using, just stick it to the side of refrigerator and wait for few hours.\u003c\/p\u003e\u003cp\u003e1. Remove the draft stopper before using your fireplace and use it only after the fireplace is cooling down because the high temperature will reduce magnetism.\u003c\/p\u003e\u003cp\u003e2. Check whether your fireplace vent can absorb with magnets, normally, it is applicable as long as your vent is made of metal.\u003c\/p\u003e\u003cp\u003e3. Please confirm the size of your fireplace vent before purchasing to make sure you order the most suitable one.\u003c\/p\u003e\",\"47340166250665\":\"\u003ch4\u003eAbout This Item\u003c\/h4\u003e\u003cul class=\\\"about-this-item\\\"\u003e\u003cli\u003eSpecification: Color: Black Brown; Material: Rubber Magnetic; Overall Size: 914.4 x 101.6 x 1 mm \/ 36 x 4 x 0.04 inch (L*W*T); Packing List: 4 x Magnetic Fireplace Blocker Covers\u003c\/li\u003e\u003cli\u003eAdvantage: 1. This fireplace vent screen allows you to cut down energy consumption by reducing the heat lost, thus allowing you to save utility bills. 2. Improved insulation, stopping dust and pollen from entering the room when the fireplace stops working and avoiding unnecessary cleaning. 3. Wide range of applications, the magnetic cover fits wood burning fireplace, gas fireplace, vents and grilles of HVAC system, RV etc.\u003c\/li\u003e\u003cli\u003eInstruction: Easy to use, attach the magnetic fireplace vent cover to your fireplace vents and adjust its position properly to make sure the vent is fully covered. Our magnetic fireplace draft shield can be easily trimmed with scissors to fit your vents of different sizes and shapes.\u003c\/li\u003e\u003cli\u003eApplication: This magnetic fireplace draft blocker is used to stop unwanted cold\/hot air, pollen and dust from entering you home through fireplace vent. It's made of magnetic rubber with powerful magnetism, it can be firmly attached to your metal fireplace vent and won't fall off easily. In winter, this fireplace draft stopper can effectively keep cold air out to prevent heat loss. In summer, this fireplace vent cover can be used to keep hot and humid air out.\u003c\/li\u003e\u003cli\u003eNOTE: 1. Remove the draft stopper before using your fireplace and use it only after the fireplace is cooling down because the high temperature will reduce magnetism. 2. Check whether your fireplace vent can absorb with magnets, normally, it is applicable as long as your vent is made of metal. 3. Please confirm the size of your fireplace vent before purchasing to make sure you order the most suitable one.\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eProduct Details\u003c\/h4\u003e\u003ctable class=\\\"product-overview\\\"\u003e\u003ctbody\u003e\u003ctr\u003e\u003cth\u003eBrand\u003c\/th\u003e\u003ctd\u003ePATIKIL\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eMaterial\u003c\/th\u003e\u003ctd\u003eMetal\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eColor\u003c\/th\u003e\u003ctd\u003eBlack\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eProduct Dimensions\u003c\/th\u003e\u003ctd\u003e36\\\"L x 4\\\"W\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eFinish Type\u003c\/th\u003e\u003ctd\u003ePowder Coated\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\u003ch4\u003eProduct Description\u003c\/h4\u003e\u003ch5\u003eProduct description\u003c\/h5\u003e\u003cdiv style=\\\"display:flex;flex-wrap:wrap;gap:0;margin:0;padding:0;line-height:0;font-size:0;\\\"\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/edbbf01f-2256-4769-8351-46fa98ded291.__CR0,0,600,180_PT0_SX600_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/597220e5-fee2-4c3f-bf2e-db4c8c5a1a53.__CR0,0,970,300_PT0_SX970_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/2334a132-322f-4d1b-b689-128b510becf5.__CR0,0,970,600_PT0_SX970_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003c\/div\u003e\u003ch5\u003eAll Season Use\u003c\/h5\u003e\u003cp\u003eThis magnetic fireplace draft blocker is used to stop unwanted cold\/hot air, pollen and dust from entering you home through fireplace vent. It\u0026#039;s made of magnetic rubber with powerful magnetism, it can be firmly attached to your metal fireplace vent and won\u0026#039;t fall off easily. In winter, this fireplace draft stopper can effectively keep cold air out to prevent heat loss. In summer, this fireplace vent cover can be used to keep hot and humid air out. In addition, this magnetic cover also suitable for floor, wall, ceiling vents and grilles of HVAC system or RV etc. where can absorb to magnetic materials.\u003c\/p\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/aa5fbaaa-50ee-4eee-b275-8bd1b69c6164.__CR0,0,600,600_PT0_SX300_V1___.jpg\\\" class=\\\"aplus-img\\\" style=\\\"max-width:100%;height:auto;display:block;margin:0!important;padding:0!important;border:0;vertical-align:top;line-height:0;font-size:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003ch5\u003eStrong Magnetism\u003c\/h5\u003e\u003cp\u003eMade of rubber magnetic material with strong magnetism and toughness, it can be firmly attach to your metal fireplace vent and won\u0026#039;t fall off easily.\u003c\/p\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/fdc10027-4681-4671-a6ca-925ca39820cb.__CR0,0,600,600_PT0_SX300_V1___.jpg\\\" class=\\\"aplus-img\\\" style=\\\"max-width:100%;height:auto;display:block;margin:0!important;padding:0!important;border:0;vertical-align:top;line-height:0;font-size:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003ch5\u003eCut to Fit Your Vents\u003c\/h5\u003e\u003cp\u003eOur magnetic fireplace draft shield can be trimmed with scissors to fit your vents of different sizes and shapes.\u003c\/p\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/4b236d87-b1b7-4f76-b4cd-2307caf1d889.__CR0,0,600,600_PT0_SX300_V1___.jpg\\\" class=\\\"aplus-img\\\" style=\\\"max-width:100%;height:auto;display:block;margin:0!important;padding:0!important;border:0;vertical-align:top;line-height:0;font-size:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003ch5\u003eWaterproof\u003c\/h5\u003e\u003cp\u003eIt\u0026#039;s waterproof, clean the dust on its surface with a damp cloth after using for a long time.\u003c\/p\u003e\u003cp\u003eSpecification Color: Black Material: Magnetic Rubber Overall Size: 914.4 x 101.6 x 1mm\/36 x 4 x 0.04 inch (L*W*T)\/1016 x 152.4 x 1mm\/40 x 6 x 0.04 inch (L*W*T) Packing List: 2 x Fireplace Draft Stoppers\/4 x Fireplace Draft Stoppers\u003c\/p\u003e\u003cp\u003e1. This fireplace vent screen allows you to cut down energy consumption by reducing the heat lost, thus allowing you to save utility bills.\u003c\/p\u003e\u003cp\u003e2. Improved insulation, stopping dust and pollen from entering the room when the fireplace stops working and avoiding unnecessary cleaning.\u003c\/p\u003e\u003cp\u003eEasy to use, the fireplace magnetic vent cover has two different sides, one side is a matte surface (non-magnetic), and the other side is a smooth shiny  surface (magnetic). After the fireplace has cooled down, attach the magnetic fireplace vent cover to your fireplace vents and adjust its position properly to make sure the vent is fully covered. Trim the magnetic fireplace cover with scissor to fit your vents of different sizes and shapes.The magnetic vent covers come in rolls, to improve its performance, it is better to flatten before using, just stick it to the side of refrigerator and wait for few hours.\u003c\/p\u003e\u003cp\u003e1. Remove the draft stopper before using your fireplace and use it only after the fireplace is cooling down because the high temperature will reduce magnetism.\u003c\/p\u003e\u003cp\u003e2. Check whether your fireplace vent can absorb with magnets, normally, it is applicable as long as your vent is made of metal.\u003c\/p\u003e\u003cp\u003e3. 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