The 4131CPKL36 automatic door bottom seals gaps under doors to block light, sound, and drafts from entering rooms. This surface-mounted weatherstrip installs on the door bottom and automatically lowers a PemkoPrene gasket seal when the door closes. Pemko designed this 36-inch unit to solve energy loss and noise transmission problems in commercial and institutional buildings.
The clear anodized aluminum housing contains a smooth-operating mechanism that raises and lowers the flexible PemkoPrene seal. When the door opens, the seal retracts to prevent floor drag and wear. The unit comes with mounting hardware, end plates, and installation instructions for straightforward surface mounting.
| Material | Anodized Aluminum with PemkoPrene Seal |
|---|---|
| Finish | Clear Anodized Aluminum |
| Length | 36 inches |
| Mounting | Surface Mounted |
| Warranty | 5 Years Limited |
This door bottom meets UL 10C fire test standards and UL 1784 air leakage requirements. It also complies with ANSI/BHMA A156.22 door gasketing standards, ASTM E-283-04 air infiltration testing, and holds GREENGUARD Gold certification for low chemical emissions.
Fire-rated assemblies require UL-listed components like this automatic door bottom to maintain their UL 10C fire door assembly rating. For egress doors in high-occupancy buildings, check NFPA 101 Life Safety Code requirements for proper door hardware coordination.