Pemko 4301CRL36 Automatic Door Bottom Sweep 36 in

Product Description

The PEMKO 4301CRL36 is a heavy-duty automatic door bottom sweep designed to seal the gap between the bottom of a door and the threshold. When the door closes, the sweep mechanism drops the sponge neoprene seal into contact with the floor surface, blocking air infiltration, dust, light, and sound. The body is constructed from clear anodized aluminum and measures 36 inches in length with an overall height of 2.125 inches. This sweep is installed by door hardware specialists, carpenters, and general contractors on commercial and heavy-use residential doors where consistent sealing performance is required.

The 4301CRL36 is suited for interior and exterior door applications where controlling drafts, sound transmission, and particulate infiltration is a priority. Typical installation scenarios include commercial office entries, hotel corridors, healthcare facilities, and institutional buildings. The automatic drop-seal design ensures the neoprene insert engages the floor on every close cycle without manual adjustment, making it a reliable choice for high-traffic door openings. The clear anodized aluminum finish is compatible with standard aluminum door frames and neutral-finish hardware packages.

Key Features

• Automatic drop mechanism engages sponge neoprene seal on door close, retracts on open
• Clear anodized aluminum housing resists corrosion and blends with standard aluminum door hardware
• Sponge neoprene insert provides a compliant, durable seal against uneven or textured floor surfaces
• 36-inch length fits standard commercial door widths without field cutting
• Heavy-duty construction rated for high-cycle, high-traffic door applications
• Bristle channel length of approximately 1.781 inches supports consistent seal contact depth

Compatibility

Designed as an OEM-style replacement or new-installation automatic door bottom sweep for standard commercial and heavy-duty residential doors with a bottom rail width compatible with a 36-inch sweep body.

Installation Notes

Installation is typically performed by a door hardware technician or finish carpenter. The sweep is surface-mounted to the interior face of the door bottom rail using the fastener pattern provided with the unit. Verify door bottom rail width and clearance above the finished floor before mounting to ensure proper seal engagement without binding. Consult local building codes, including IBC accessibility requirements, for minimum clearance tolerances at door thresholds in commercial occupancies.