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Designed to handle high volumes of air with horizontal flow
1550 Series Engineering/Performance Data
Ceiling opening must be 4” larger in length and width than the nominal duct size
Round ceiling radiation butterfly damper
Tool Operated Opposed Blade Damper
Architectural Lattice Grilles 1307-14x28 Finish:DarkBronze Designed to handle high volumesStandard 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 *
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