855 Series Engineering/Performance Data
Designed to handle high volumes of air with horizontal flow
remove the two center cones as a unit and reposition the six screws
904 - Double Deflection Adjustable Aluminum Blade Grille for a 48" x 18" Duct Opening (front blades parallel to shortest dimension)
Countersunk mounting holes with color matching Philips Pozidriv screws
Architectural Lattice Grilles 1307-38x20 past 12 months 855 Series Engineering/Performance DataStandard 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 *