Description
Pemko Full Mortised Automatic Door Bottom with PemkoPrene Insert
The Pemko 411APKL Auto Door Bottom with PemkoPrene Insert features a drop-down seal that automatically lowers when the door closes, so it effectively seals gaps up to 3/4″. Additionally, the full mortise aluminum case maintains a clean, flush appearance, while providing durability for long-lasting use. Because it is compatible with 1-3/4″ and 1-3/8″ doors, it works well for upscale condos, dormitories, commercial buildings, and luxury hotels. Moreover, it comes with multiple end plates and screws, so installation is simple and fast.
Furthermore, the hinge-side drop-bar mechanism prevents seal skidding and door hang-up during closure, which ensures smooth and reliable operation. As a result, it blocks drafts, dust, moisture, insects, fumes, light, and sound, while keeping doors energy-efficient. In addition, the PemkoPrene insert combines the flexibility of natural rubber with the durability of thermoplastics, so it resists cleaning fluids, disinfectants, and everyday wear. Finally, the symmetrical, square-shaped aluminum case allows for even flush mounting and easy flipping for non-handed installation.
Key Features
- Non-handed, full mortise design
- Automatic drop-bar seal lowers on door closure
- Seals up to 3/4″ gap under the door
- Compatible with doors 1-3/4″ and 1-3/8″ thick
- End plates provided for all mounting applications
- Available in sizes 12″ to 72″
- PemkoPrene insert: durable, flexible, rubber-like material
- Clean, symmetrical aluminum case for flush installation
Benefits
- Blocks drafts, dust, moisture, insects, fumes, light, and sound
- Smooth hinge-side seal prevents skidding or door hang-up
- Fast and easy installation with no disassembly required
- Long-lasting and resilient materials for daily use
- Ideal for decorative, commercial, and luxury doors
Specifications
- Base Material: Aluminum
- 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 Tested
- UL 10C – Positive Pressure Fire Tested
- ASTM E-283-04 (2012)
- ASTM E 90-2009
- ANSI/BHMA A156.22 – Door Gasketing and Edge Seal Systems









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