Material: Brass, stainless steel
Fastener:20 ea. #8 x 3/4" FH combo screws, 2 ea. #6 - 8 plastic anchors
Size: 1" x 63/4"
Options: Can be used with the No. 570 Dust Proof Strike
Features:• For Fire Rated Metal Doors labeled A, B, C, D & E up to 4'w x 8'h
• Non-handed
• Fully automatic– opening active door retracts top and bottom bolts
• Override feature prevents damage to doors or bolts if bolt heads are blocked from entering strikes
• Bolt head rods are adjustable up to 1 1/2"
• Thermal lock automatically locks the inactive door under high heat conditions due to fire