{"product_id":"pemko-434apkl42-42-3-6-full-mortise-automatic-door-bottom-with-pemkoprene-mill-finish-aluminum-finish","title":"Pemko 434APKL42 42\" 3' 6\" Full Mortise Automatic Door Bottom with PemkoPrene Mill Finish Aluminum Finish","description":"\u003cp\u003eThe 434APKL42 full mortise automatic door bottom installs into the bottom rail of doors to seal the gap between door and threshold. This weatherization component prevents air infiltration, moisture, dust, and sound transmission through the door assembly. \u003ca href=\"\/companies\/pemko\"\u003ePemko\u003c\/a\u003e engineered this unit with a low-force actuating mechanism that drops the PemkoPrene seal bar when the door closes, creating an effective barrier against environmental elements.\u003c\/p\u003e\n\n\u003cp\u003eThe reversible design works on both wood and metal doors in commercial and institutional applications. The unit ships custom cut to 42 inches and can be field-trimmed up to 2 inches for exact fit. The mill finish anodized aluminum housing provides corrosion resistance while the proprietary PemkoPrene seal material maintains flexibility across temperature ranges. Installation hardware comes included with the unit.\u003c\/p\u003e\n\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eAnodized Aluminum with PemkoPrene Seal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLength\u003c\/th\u003e\n\u003ctd\u003e42\" (3' 6\")\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 positive pressure fire testing standards and UL 1784 air leakage requirements. It also complies with ANSI\/BHMA A156.22 door gasketing standards, ASTM E283 air infiltration testing, and ASTM E90 sound transmission ratings. The unit carries GREENGUARD Gold certification for low chemical emissions.\u003c\/p\u003e\n\n\u003cp\u003eFire-rated door assemblies require tested components that maintain integrity under \u003ca href=\"\/resources\/building-codes-standards\/fire-inspection-compliance\/ul-10c-fire-rated-doors\"\u003eUL 10C fire testing conditions\u003c\/a\u003e. For buildings with egress requirements, proper door sealing supports \u003ca href=\"\/resources\/building-codes-standards\/emergency-life-safety\/nfpa-101\"\u003eNFPA 101 Life Safety Code\u003c\/a\u003e compliance by controlling smoke migration during fire events.\u003c\/p\u003e","brand":"Pemko","offers":[{"title":"Each","offer_id":46754801057969,"sku":"434APKL42","price":160.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0529\/5269\/4961\/files\/0_d8808aa7-ef9a-4a28-a148-0977b7734e53.webp?v=1775807019","url":"https:\/\/shop.usmadesupply.com\/products\/pemko-434apkl42-42-3-6-full-mortise-automatic-door-bottom-with-pemkoprene-mill-finish-aluminum-finish","provider":"US Made Supply","version":"1.0","type":"link"}