- This brush gasketing is supplied with a Nylon Brush ("NB") insert - item number P58400 (available in gray and black).
Smoke Tested - UL1784
Fire Rated - UL10C - Positive Pressure
Underwriters Laboratory 4L10
GREENGUARD Gold Certified
18950CNB: C - Clear Anodized Aluminum with Gray Nylon Brush insert
18950DNB: D - Dark Bronze Anodized Aluminum with Black Nylon Brush insert