Description

Pemko 411ARL Auto Door Bottom – Full Mortise with Sponge Neoprene Insert

The Pemko 411ARL Auto Door Bottom – Sponge Neoprene Insert delivers superior sealing performance while maintaining a clean, seamless door appearance. Designed for high-end residential and commercial applications, this automatic drop-down seal activates when the door closes, effectively sealing gaps up to 3/4″ to block air, sound, smoke, and light infiltration.

Constructed with a durable mill finish aluminum casing and a black sponge EPDM (neoprene) insert, the 411ARL is engineered for long-lasting flexibility and resilience. The slightly compressible sponge neoprene remains flexible in extreme temperatures and resists deterioration from oily substances, ensuring reliable performance in demanding environments.

Ideal for decorative doors, luxury condominiums, dormitories, office buildings, and hotels, this full mortise model provides a sleek, flush-mounted solution that preserves the door’s aesthetic.

Key Features

• Full Mortise, Non-Handed Design – Easily reversible without disassembly; simply flip to change handing
• Automatic Drop-Down Seal – Plunger-activated mechanism lowers the seal upon door closure for a tight, positive seal
• Sponge Neoprene (EPDM) Insert – Flexible in high and low temperatures; resistant to oils and wear
• Seals Gaps up to 3/4″
• Smooth Positive Seal Mechanism – Aluminum case encloses a movable drop-bar for consistent, reliable performance
• Optional Nylon Brush (NB) Models Available – Ideal for uneven surfaces such as carpet, stone, and grout
• Clean, Symmetrical Square Case Design – Ensures even flush mounting
• End Plates Included – Compatible with 1-3/8″ and 1-3/4″ thick doors

Benefits

• Blocks drafts, dust, moisture, insects, smoke, fumes, light, and sound
• Enhances energy efficiency and indoor comfort
• Supports fire and smoke-rated door assemblies
• Quick and easy installation with included fasteners

Specifications

• Base Material: Aluminum (Mill Finish)
• Insert: Black Sponge EPDM (Neoprene)
• Fasteners: FHSMS #6 x 5/8″
• Maximum Length: 72″
• Minimum Length: 12″
• Overall Height: 1-3/8″
• Width: 9/16″

Certifications & Ratings

• GREENGUARD Gold Certified
• UL 1784 – Air Leakage / Smoke Tested
• UL 10C – Positive Pressure Fire Rated
• Underwriters Laboratory 4L10 Listed
• ASTM E283-04 (2012) – Air Infiltration Tested
• ASTM E90-2009 – Sound Tested
• ANSI/BHMA A156.22 Certified