Pemko 4131CPKL36 Automatic Door Bottom 36 Inches Clear Aluminum

Product Description

The PEMKO 4131CPKL36 is a surface-mounted automatic door bottom designed to seal the gap between the bottom of a door and the threshold. When the door closes, the mechanism drops a PemkoPrene seal against the floor surface, blocking drafts, dust, sound, and moisture. When the door opens, the seal retracts automatically to prevent drag across flooring. The unit ships in a clear aluminum finish and is sized for a 36-inch door opening. It is installed by door hardware technicians and finish trades on commercial and residential entry doors where consistent sealing performance is required.

This automatic door bottom is suited for exterior and interior door applications where air infiltration, sound attenuation, or weather control is a priority. Typical installations include commercial office entries, hotel corridors, healthcare facilities, and residential exterior doors. The clear aluminum finish blends with standard aluminum door frames and hardware. The unit mounts to the face of the door bottom rail, making it accessible for retrofit installations without door modification.

Key Features

• Automatic drop-seal action retracts on open, engages on close to maintain consistent floor contact
• PemkoPrene seal material provides durable compression sealing against drafts, dust, and moisture
• Clear aluminum finish suits standard aluminum door frames and commercial hardware sets
• Surface-mounted design supports retrofit installation without routing or mortising the door
• Sized for 36-inch door openings in single-unit format

Compatibility

Designed as an OEM-style surface-mounted automatic door bottom for standard 36-inch commercial and residential doors requiring a drop-seal weatherstripping solution at the door bottom.

Installation Notes

Installation is typically performed by a door hardware technician or finish carpenter. The door bottom rail must be clean and free of existing hardware before mounting. Fasten the unit to the door face per the manufacturer hole pattern using appropriate fasteners for the door material. Verify seal contact and retraction travel before returning the door to service.