Pemko 411ARL-36 is a full-mortise automatic door bottom designed for a clean, concealed install and reliable sealing at the bottom of the door. When the door closes, the seal automatically drops to help block drafts, dust, light, and sound—then retracts when the door opens to reduce wear. Built with a mill finish aluminum housing and a durable black sponge EPDM insert, it’s an excellent choice for commercial and multi-family openings that need better performance than a standard sweep.

Air Infiltration Tested; Sound Tested ASTM E90; BHMA Certified; Smoke Tested UL1784; Fire Rated UL10C Positive Pressure; cUL Listed 4L10; GREENGUARD Gold Certified

Key features

• Brand/Model: Pemko 411ARL-36

• Type: Full-Mortise Automatic Door Bottom

• Length: 36"

• Finish: Mill Finish Aluminum

• Insert: Black Sponge EPDM

• Operation: Drops on close, retracts on open (reduced drag + longer life)

• Unit: EA (Each)

Common applications

• Commercial doors where a concealed, clean look is preferred

• Openings needing improved sealing for air, dust, light, and sound

• Retrofit upgrades for better comfort and performance