The 315CN48 is a surface-mounted door bottom sweep that seals gaps between doors and thresholds or floor surfaces. This 48-inch sweep installs on commercial and institutional doors to prevent air infiltration, smoke passage, and energy loss. Pemko designed the 315 Series with a 1.25-inch aluminum casing and neoprene extrusion to handle fire-rated and smoke control applications.
The clear anodized aluminum finish resists corrosion while the 7/16-inch neoprene seal compresses against floor surfaces to block air gaps. Color-coordinated mounting screws come included for straightforward installation on door bottoms. This sweep works on both fire doors requiring UL 10C positive pressure testing and standard commercial doors needing weatherization.
Building managers use door bottom sweeps like this to maintain proper building pressurization and reduce HVAC costs. The neoprene material maintains flexibility across temperature ranges while creating consistent contact with thresholds. For facilities managing multiple door types and egress requirements, see NFPA 101 Life Safety Code guidance on door assembly specifications.
| Material | Clear Anodized Aluminum with Neoprene |
|---|---|
| Length | 48 inches |
| Seal Height | 7/16 inch |
| Casing Width | 1.25 inches |
| Mounting | Surface mount with screws included |
| Warranty | 5 years limited |
This door sweep meets UL 10C fire door assembly standards, UL 1784 air leakage requirements, ASTM E283 air infiltration testing, and ANSI/BHMA A156.22 door gasketing specifications. GREENGUARD Gold certification confirms low chemical emissions for indoor air quality.