Pemko 411ARL32 32" 2' 8" Full Mortise Automatic Door Bottom with Sponge Neoprene Mill Finish Aluminum Finish

The 411ARL32 full mortise automatic door bottom seals the gap between door and floor when the door closes. The drop-down mechanism activates automatically to lower the sponge neoprene seal. This prevents air infiltration and drafts in commercial buildings, upscale condos, and luxury hotels where door appearance matters.

Pemko designed this unit to mortise completely into the door bottom, maintaining clean sight lines on decorative doors. The mill finish aluminum casing resists corrosion and integrates with existing door hardware. Works with both 1-3/4" and 1-3/8" thick doors with proper end plate selection.

The automatic operation eliminates manual adjustment while providing consistent weatherization performance. For fire door applications requiring UL 10C positive pressure testing, this unit maintains seal integrity under fire conditions. Building managers installing complete fire door assemblies should review NFPA 101 Life Safety Code requirements for proper egress planning.

Material	Anodized Aluminum with Sponge Neoprene
Mounting	Full Mortise
Length	32" (2' 8")
Door Thickness	1-3/4" and 1-3/8"
Warranty	5 Years Limited

This door bottom meets UL 10C fire test standards, UL 1784 air leakage requirements, ASTM E283 air infiltration testing, and ANSI/BHMA A156.22 door gasketing specifications. GREENGUARD Gold certification confirms low chemical emissions for indoor air quality.