Pemko 434APKL32 Full Mortise Automatic Door Bottom 32 in

Product Description

The PEMKO 434APKL32 is a full mortise automatic door bottom designed to seal the gap between the bottom of a door and the threshold or floor surface. When the door closes, the mechanism automatically drops the seal into contact with the floor, blocking drafts, sound, light, and moisture. When the door opens, the seal retracts to prevent drag on flooring. The unit features a mill finish aluminum housing and incorporates PemkoPrene gasketing material for a durable, compressible seal. At 32 inches in length, it fits standard 2 foot 8 inch door widths. Installation is performed by licensed carpenters or door hardware technicians working on commercial or residential door assemblies.

The 434APKL32 is suited for interior or exterior door applications where a continuous bottom seal is required. Full mortise automatic door bottoms are commonly installed in commercial buildings, offices, hotels, multi-family residential units, and institutional facilities where acoustic control, smoke containment, or energy efficiency is a priority. The automatic drop action makes this model appropriate for high-traffic doors where a manual adjustment is impractical. It is installed directly into a routed mortise channel in the door bottom edge, keeping the housing flush with the door face for a clean appearance.

Key Features

• Automatic drop-and-retract mechanism activates on door close and open cycles
• Full mortise design mounts flush within the door edge for a low-profile installation
• PemkoPrene seal provides compressible, durable contact against the floor or threshold
• Mill finish aluminum housing resists corrosion and suits unfinished or field-painted applications
• 32 inch length fits standard 2 foot 8 inch door openings

Compatibility

Designed as an OEM-style replacement or new-installation door bottom for full mortise automatic door bottom applications on standard commercial and residential doors requiring a 32 inch sweep seal.

Installation Notes

Installation is performed by a qualified door hardware technician or finish carpenter. The door must be removed or braced securely before routing the mortise pocket in the door bottom edge. Follow the door manufacturer's mortise dimensions and verify that the floor surface is level before setting the seal drop height. Consult local building codes for any requirements related to smoke, accessibility, or fire-rated door assemblies before installation.