Designed for protection of ceiling openings in fire rated floor/ceiling assemblies with fire resistance ratings of 3 hours or less
Holds up to a 2" filter (not included) with filter retention tabs (FG2)
blades prevent metal on metal rattle
4-Way ceiling register with stiffened 1/2" fan shaped louvers for silent operation
Reinforced welded core and extra supports for heavy duty application
Architectural Lattice Grilles 1307-40x26 Finish:MBlack Designed for protection of ceilingStandard Features * 1" rim size (2" larger than nominal duct size) * 14 gauge steel * 1305: 1 2" lattice opening, 3 16" cross bars, 53% free area * 1306: 3 4" lattice opening, 1 4" cross bars, 57% free area * 1307: 13 16" lattice opening, 3 16? cross bars, 69% free area * 1308: 7 8" lattice opening, 1 4" cross bars, 60% free area * Soft White Options * Countersunk screwholes with matching Phillips #8 x 1 1 2" oval Screws * 10 or 12 gauge steel *