Description
Tapered H Shield 4ft x 4ft All Thicknesses Thickness:2.5" 3.5" (16 Boards) When paired with the VELUX Model:EL 106R 098 1104889 special_order_item Adjustable Flow Control Precision When paired with the VELUX No Leak Skylight (models FCM it conforms to ASTM E84 Class 1 (A) fire ratings and offers dependable performance in demanding environments