Architectural Lattice Grilles 1306-20x20 T-Bar Front blades are parallel to

Front blades are parallel to the shortest dimension

Spiral pipe diameter must be 4” larger than the width of the grille

904 - Double Deflection Adjustable Aluminum Blade Grille For a 40" x 18" Duct Opening (front blades parallel to shortest dimension)

Opposed Blade Damper

Architectural Lattice Grilles 1306-20x20 T-Bar Front blades are parallel toStandard Features 1 rim size (2 larger than nominal duct size order size) 14 gauge steel construction Countersunk mounting holes for a flush appearance 3 4 Wide x 3 4 High square holes. 1 4 crossbars, with 57% free area Options 14 GA 304 SS Construction Fractional Sizes Tamper proof Screws *Pricing is based on standard 14 GA steel construction. Please contact us for a quote on options. tony@registers direct. com