... , Part 7)RFO (Class O, BS476, Part 6&7)RU (V0 @ 1/2", UL94)AM (25/50, ASTM E84)Sheet: Standard thickness ... ", 3/4", 1", 1-1/4"Special thickness: 3/4/5/17/27/40/50mmStandard width: 1/1.2/1.5 meter (up to 1.5m)Standard ... /9/15/20/25/30mm or 1/4", 3/8", 1/2", 3/4", 1", 1-1/4"Standard length: 1.8m or 6 feet, 2mID ...