Examples of Misc. Accessories

Oil Capitol Sheet Metal fabricates a wide variety of duct accessories, including Flex Connectors, Turning Vanes, Tie Rods, Grille Boxes, Round Duct Taps, Volume Dampers, Duct Silencers, Roof Caps, and Hanger Straps.

Flex connectors are fabricated as rectangular, round, or oval, and can be any size. Connector ends can be 1/2", 3/4", or 1"; flange; S & Drive, Ductmate, or inside / outside tap end.

Standard Grille Boxes can be lined or bare and are constructed of galvanized sheet metal in gages designated by the box size. Typical depth for grille boxes is 8”. Boxes of non-standard depth are available by special order.

Grille boxes can also be manufactured of stainless steel, aluminum, carbon steel, or polyvinyl coated steel, and are available by special order.

Duct Silencers are constructed of designated gage outer skin, designated liner thickness, with or without 20 gage perforated liner.

Volume Dampers can be round or rectangular and will be installed in the tap, duct or at the grille.