Cover blank surface mount aluminium

GRF blank cover are used in threaded rigid conduit systems to act as junction boxes or pull outlets. Surface mounting, can be obtained by nailing box to concrete form through mounting lug, Drilled mounting lugs. Four conduit bosses spaced 90.. apart on sides and one boss on back. Blank or drilled and tapped bodies (with 4 side bosses tapped and plugged, plus blank back boss).