Pemko 411ARL32 Full Mortise Automatic Door Bottom 32 in

Product Description

The PEMKO 411ARL32 is a full mortise automatic door bottom designed to seal the gap between the door and threshold when the door closes. As the door shuts, an internal actuator lowers a sponge neoprene seal to make contact with the floor surface, blocking air, light, sound, and weather infiltration. When the door opens, the seal retracts automatically to prevent drag on flooring. The unit ships in a mill finish aluminum housing sized for a 32-inch (2 feet 8 inches) door. Installers in commercial and high-end residential construction specify this type of door bottom where a clean, recessed look is required and surface-mounted hardware is not acceptable.

The 411ARL32 is suited for interior and exterior door applications where weather sealing, sound attenuation, or smoke and draft control are priorities. Full mortise installation means the entire mechanism sits recessed into a routed pocket in the door bottom edge, keeping the face of the door clean. This unit is appropriate for wood doors in commercial office, hospitality, healthcare, and multifamily residential settings where building envelope performance and finish quality are both factors. Installation is typically performed by a finish carpenter, door hardware installer, or general contractor during door prep and hanging.

Key Features

• Full mortise design recesses completely into the door bottom for a flush, concealed appearance
• Automatic actuator drops the seal on door close and retracts on door open to prevent floor drag
• Sponge neoprene seal provides effective closure against air, light, dust, and sound transmission
• Mill finish aluminum housing resists corrosion and accepts paint or anodizing for finish matching
• Sized for a 32-inch door width for direct fit without field cutting

Compatibility

Designed as an OEM-style full mortise automatic door bottom for standard 32-inch interior and exterior doors requiring a recessed seal solution.

Installation Notes

Installation requires routing a precise mortise pocket into the bottom edge of the door to the manufacturer-specified depth and width before fitting the unit. A licensed finish carpenter or qualified door hardware installer should perform the mortise cut and hardware mounting. Verify door thickness and bottom rail dimensions are sufficient to accept a full mortise unit before ordering. Always follow applicable building codes and manufacturer instructions for fire-rated or smoke-labeled door assemblies.