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Effectively create return air ducts between joists or studs with this Imperial Joist Panning Lining. The 16-in x 36-in joist lining seals the underside of floor joist space, creating a duct run to channel air back through the air return system. For ease of use, the panning features a 16-in width equal to the distance of joist spacing. This allows you to nail or screw the lining directly into the wood, creating a run of rectangular duct.

Imperial 16-in x 36-in Steel Solid Sheet Metal | GVL0107