{"product_id":"pemko-434arl36-36-3-full-mortise-automatic-door-bottom-with-sponge-neoprene-mill-finish-aluminum-finish","title":"Pemko 434ARL36 36\" 3' Full Mortise Automatic Door Bottom with Sponge Neoprene Mill Finish Aluminum Finish","description":"\u003cp\u003eThe 434ARL36 automatic door bottom creates a complete seal at the base of doors to stop air infiltration, light transfer, and sound transmission. This full mortise unit installs flush into the door bottom and automatically drops a sponge neoprene seal when the door closes. \u003ca href=\"\/companies\/pemko\"\u003ePemko\u003c\/a\u003e designed this system to solve energy efficiency problems in commercial buildings where gaps under doors waste heating and cooling.\u003c\/p\u003e\n\n\u003cp\u003eThe low-force actuating mechanism requires minimal door closing pressure to engage the drop-down seal bar. Mill finish anodized aluminum construction handles heavy commercial use. The unit can be field-trimmed up to 2 inches and works on both wood and metal door installations. Mounting hardware ships with each unit.\u003c\/p\u003e\n\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eLength\u003c\/th\u003e\n\u003ctd\u003e36 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eAnodized Aluminum with Sponge Neoprene\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eFull Mortise\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eMill Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd\u003e5 Years Limited\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cp\u003eThis door bottom meets UL 10C fire door assembly testing and UL 1784 air leakage standards. It also complies with ANSI\/BHMA A156.22 door gasketing requirements and ASTM E-283 air infiltration testing. \u003ca href=\"\/resources\/building-codes-standards\/fire-inspection-compliance\/ul-10c-fire-rated-doors\"\u003eUL 10C testing\u003c\/a\u003e validates performance in fire door assemblies under positive pressure conditions. For broader building performance context, \u003ca href=\"\/resources\/building-codes-standards\/emergency-life-safety\/nfpa-101\"\u003eNFPA 101\u003c\/a\u003e covers life safety egress requirements that work alongside proper door sealing systems.\u003c\/p\u003e","brand":"Pemko","offers":[{"title":"Each","offer_id":46754781102257,"sku":"434ARL36","price":127.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0529\/5269\/4961\/files\/0_18dd6b74-45bd-478e-bb09-3fad8b6e8099.webp?v=1775806286","url":"https:\/\/shop.usmadesupply.com\/products\/pemko-434arl36-36-3-full-mortise-automatic-door-bottom-with-sponge-neoprene-mill-finish-aluminum-finish","provider":"US Made Supply","version":"1.0","type":"link"}