Pemko 420APKL-36 is a 36" - 420 Series Full Mortise Automatic Door Bottom is specifically designed for Hollow Metal doors with a 13/16" inverted channel. It features a heavy-duty mechanism for smooth operation and is fitted with two fire-rated rubber seals. This door bottom prevents drafts, dust, moisture, smoke, fire, and sound from entering the gap under the door. It can be easily cut in the field for additional adjustment. The aluminum casing is fully mortised, maintaining the appearance of the door alleviating the need for end plates.

Air Infiltration Tested ASTM E-283-04; Sound Tested ASTM E90; BHMA Certified ANSI/BHMA A156.22; Smoke Tested UL 1784; NFPA 105-2013; Fire Rated UL10B, UL10C Positive Pressure

Key features

• Brand/Model: Pemko 420APKL-36

• Type: Automatic Door Bottom (for Hollow Metal Doors)

• Length: 36"

• Finish: Clear Anodized Aluminum

• Insert: Black PemkoPrene

• Operation: Drops on close / retracts on open (less drag, longer life)

• Unit: EA (Each)

Common applications

• Hollow metal doors in corridors, offices, schools, retail, and service openings

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

• Retrofit upgrades where a sweep isn’t enough or drags on the floor