The 550 LT Series Long Throw Return Air Grille is styled to match the 150 and 250 Supply Grilles. The face bars are non-adjustable and available iin either a horzontal position (H) or vertical position (V), factory set at either 0º or 45º degrees, spaced on 1.5″ or 3″ centers, with custom configurations available at an additional cost.
The same hollow air-foil bars used on the supply grilles are used on the return air grilles.
Available with horizontal face bars (550H) or vertical face bars (550V).
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.