The SSHFG 550 Series Single Deflection Hinged Filter Grille is hinged in our 1000 Plaster Frame and secured with low profile ¼-turn fasteners. The hinged filter grille allows easy access to filters or mechanical equipment. Specify with filter clips for filter applications; 1″ filter depth is standard, with optional filter depths up to 2″.
The SSHFG 550 face blades are non-adjustable and available in either a horizontal position (H) or vertical position (V), factory set at either 0° or 45° degrees, spaced on .750″ centers.
The same hollow air-foil blades used on the supply grilles are used on the return air grilles.
Specify: Series S-44 Opposed Blade Damper to make return register. The S-44 OBD assures even distribution of air across the grille face, as well as positive volume control.