Architect's Corner for 640
Fire-rated counter door Model 640 is ideal for openings requiring a counter-type fire-rated door. Our Model 640 has a flat slat curtain design in a primed galvanized steel finish.
- Max Width: 14' (4267 mm)
- UL/FM ratings: 1 ½ hour Class B (FM optional; 3 hour optional UL & FM)
- NFPA-80 compliant
- Fusible link separates at 165° F (74° C) to automatically close the door