Allied Moulded AMU1426CCLF Ultraline Series Fiberglass JIC Size Junction Box, Snap Latch with Mounting Flanges and Hinged Clear Polycarbonate Cover Gasket made of closed cell neoprene cord encased in a continuous channel 10-32 threaded inserts are installed for optional back panel Ultraguard fiberglass material is easily punched, drilled or sawed UV stabilized for outdoor use Back panels, vent kits, pole mount kits and hole plugs available