Pemko 434APKL30 Full Mortise Automatic Door Bottom 30in

Product Description

The PEMKO 434APKL30 is a full mortise automatic door bottom designed to seal the gap between the door face and the floor when the door is in the closed position. As the door closes, the mechanism automatically drops a PemkoPrene seal against the threshold or floor surface, blocking air infiltration, sound transmission, dust, and light. When the door opens, the seal retracts flush with the door face. The unit ships with a mill finish aluminum finish and is sized for 30-inch door openings. It is installed by door hardware specialists, commercial carpenters, or finish contractors during door prep or door replacement work.

The 434APKL30 is suited for commercial and institutional door applications where consistent perimeter sealing is required. Full mortise installation means the housing is routed into the bottom rail of the door, keeping the finished face clean and minimizing protrusion into the door swing path. The PemkoPrene seal material provides durable contact against the floor surface. This product is appropriate for new construction and retrofit projects where an automatic door bottom is specified for sound control, weather sealing, or smoke and draft control applications.

Key Features

• Full mortise installation keeps the housing recessed within the door bottom rail for a flush finish
• Automatic drop-seal mechanism deploys on door close and retracts on door open
• PemkoPrene seal material provides resilient contact against threshold and floor surfaces
• Mill finish aluminum housing resists corrosion and suits a range of door hardware finishes
• Sized for 30-inch door width applications
• Single unit (EA) packaging with hardware included for standard mortise installation

Compatibility

Designed as an OEM-style replacement or new-installation automatic door bottom for commercial-grade wood or hollow metal doors requiring full mortise fitment at a 30-inch door width.

Installation Notes

Full mortise automatic door bottoms are installed by qualified door hardware technicians or commercial carpenters. The door bottom rail must be routed to the correct mortise dimensions before the unit is seated and fastened. Remove the door from its hinges before routing and fitting the housing. Adjust the seal drop height according to the manufacturer's adjustment instructions to ensure proper contact with the floor or threshold without creating excessive drag.