Fire Retardant timber, Fire Retardant Plywood, Fire Retardant Lumber, Fire Retardant Wood, vacuum, pressure treated, fire retardant, impregnated with Flame Safe fire retardant to comply with the ASTM E84 Class A standard and shall have a flame spread of
3X7 4X8 44mm 54mm 64mm Fire rated Chipboard Prices For Door Core $38.00 - $39.00 Min. order: 100 pieces high quality 2x4x8 construction pine wood lumber chene LVL 2x6 oak lumber plywood scaffolding board wood LVL $0.50 - $3.50
7. Steel pipe (natural gas): ½" every 6 ft; 3/4" and 1" every 8 ft; 1¼" and larger every Floor level. 3.3 SLEEVES A. Sleeves for pipe shall be sized for both pipe and insulation except for pipes penetrating fire rated construction and exposed pipe through floor to radiation ...