TRUaire’s T-Bar Air Return Filter Grille line-up is a comprehensive combination of design, function, and budget. From the economy of stamped steel, to the shine of aluminum egg-crate, and every design between, TRUaire pours the same commitment to quality into every product. Every TRUaire Air Return Filter Grille features SmoothGlide technology, solid craftsmanship, and a hinged face. Options include steel or aluminum and T-bar grid size of your choice. The Universal R6 molded fiberglass back is only available as an option for the low profile model.