TRUaire's T-Bar Return Grilles were created with the help of our close relationships with contractors who know the industry well. These T-Bar return grilles cut installation times by utilizing a unique plenum frame design. Each model features SmoothGlide Technology, and can come with or without the duct board. Options include choice of perforated steel, acrylic egg-crate, or aluminum egg-crate, and each model is also available in full-size T-Bar configurations, including half and double T-Bar dimensions. The perforated steel Return Grille is the only model available as a Supply Diffuser, employing the stamped deflector.