Baseboard Return Air Grille 1100-16X10 T-Bar Standard collar diameter is the

Standard collar diameter is the same as the diffuser size

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Standard Features *

2x4 T-Bar (20" x 44" duct)

Front blades are parallel to the shortest dimension

Baseboard Return Air Grille 1100-16X10 T-Bar Standard collar diameter is theStandard Features * Extruded aluminum construction * 45 fixed blades parallel to longest dimension * Margin edges are 7 8" projection for baseboard installation * Countersunk mounting holes for flush appearance with color matching Phillips posi drive screws * Soft White Options * 1100FF flush frame * Fractional and odd dimension sizes * Standard Color, Designer Color or Other Finish available on this product