We stock Nailor’s model 61DV-O, their most popular steel supply register, as well as their models 6145H, 61EC, and 51EC (core only), which are used in return and exhaust applications. Model 61DGD and the fire-rated version 61DGD-FR are mostly used for door transfer applications. We also carry an opposed blade damper necessary for volume control on Nailor grilles.