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Sheet Metal Duct Return Air Support Box Product #: SB38 10X25
Model SB, 38" x 28", 10" x 25" Duct, Hot Dip Galvanized Steel, Horizontal, Sheet Metal Duct Return Air Support Box with 1" Flange Learn More
Sheet Metal Duct Return Air Support Box Product #: SB30 8X24
Model SB, 30" x 28", 8" x 24" Duct, Hot Dip Galvanized Steel, Horizontal, Sheet Metal Duct Return Air Support Box with 1" Flange Learn More