Ratings
Air Infiltration Tested
BHMA Certified
Smoke Tested - UL1784
Fire Rated - UL10C - Positive Pressure
Underwriters Laboratory 4L10
Finishes
321CN: C - Clear Anodized Aluminum with EPDM insert
321DN: D - Dark Bronze Anodized Aluminum with EPDM insert
321GN: G - Gold Anodized Aluminum with EPDM insert