Products / MasterRib
MasterRib
UL 2218 Class 4MasterRib is an exposed-fastener roof and wall panel with 3/4 in. ribs on 9 in. centers across a 36 in. coverage width, for agricultural, light commercial, residential and storage buildings and canopies at a 3:12 minimum slope, and is offered with a factory-applied DripStop condensation membrane. It is made in 29 gauge steel as standard (26 gauge optional), smooth or embossed, in Galvalume Plus or Signature 200. The data sheet lists UL 2218 Class 4, UL 580 Class 90 and Florida approvals FL# 42379.1, 42379.2, 42382.7 and 42382.8, and refers to a separate Class A fire rating data sheet in both its UL 790 and UL 263 rows.
Manufacturer
Material
Product line
Metal roof and wall panels
Impact class
UL 2218 Class 4Fire rating
Class A
Standards met
UL 2218 Class 4UL 790UL 263UL 580 Class 90UL 1897ASTM E1592
Status
active
Spec sheet
Sources
- abcmetalroofing.com verified 2026-09-26