- When installing pairs of fire doors care must be taken to maintain the requirements of NFPA 80.
- Smoke ratings apply to SP and SS finishes (see 357 with S88).
Ratings
Air Infiltration Tested
Fire Rated - UL10C - Positive Pressure
Underwriters Laboratory 4L10
Finishes
357C: C - Clear Anodized Aluminum
357D: D - Dark Bronze Anodized Aluminum
357G: G - Gold Anodized Aluminum
357SP: Steel, Galvannealed
357SS: SS - See Part For Finish Stainless Steel