Products / MS 3 & MS 4

MS 3 and MS 4 are pre-painted steel profiles with a square batten and no visible screws, made for vertical installation on roofs and walls; both cover 17.75 in., MS 3 with a flat surface and MS 4 with two grooves. Panels are 1 1/2 in. deep, run 3 to 60 ft. long, and are made from G90 (Z275) galvanized steel to ASTM A653, in 26 gauge for roofing. The data sheet sets a 5 degree (1.05/12) minimum roof slope, recommends sealant in the clips below 3:12, and calls for 5/8 in. plywood covered with a high-temperature membrane. The product page lists CAN/ULC-S135 non-combustibility, ASTM E84 Class A and WUI listing. The 40-year warranty covers the paint finish against fading and chalking, with stated exclusions.