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The PEMKO 4301CPKL36 is a surface mounted automatic door bottom designed to seal the gap between a door and the floor when the door closes. The unit features a PemkoPrene sealing element and a clear aluminum finish housing. When the door opens, the seal retracts automatically; when the door closes, it drops to make contact with the floor surface. This type of hardware is installed by commercial door hardware specialists, carpenters, and finish contractors on interior or exterior doors where draft control, sound attenuation, light blocking, or weather resistance is required. The 4301CPKL36 ships as a single unit cut to fit a 36 inch door.
The 4301CPKL36 is suited for commercial and residential applications where a clean, low-profile door seal is needed. Surface mounted installation makes it compatible with standard hollow metal, wood, and aluminum doors. The automatic drop mechanism activates on contact with the door stop, eliminating manual adjustment during operation. Typical applications include office doors, hotel corridor doors, apartment entry doors, and any opening where floor clearance and seal performance must be balanced. The clear aluminum finish complements standard commercial door hardware.
Designed as an OEM-style surface mounted automatic door bottom replacement or new installation fitting for standard 36 inch commercial and residential doors.
Installation is typically performed by a commercial door hardware installer or experienced finish carpenter. The door bottom mounts to the face of the door using the provided fastener locations in the aluminum housing. The door should be removed or held stationary during installation, and the strike pad must be positioned on the door stop so the actuator pin contacts it correctly at full close. Follow applicable building codes and manufacturer instructions for fastener placement to ensure proper seal engagement and to avoid binding with flooring transitions.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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