The PCJ12126L is a Type 4X polycarbonate junction box with a solid light gray polycarbonate cover, sized at a square 12 x 12 in face with 6 in nominal depth. It is built to insulate and protect controls and components indoors or outdoors, for pump controls, waste water, irrigation, solar/wind and chemical plants.

The box and cover are injection moulded polycarbonate thermoplastic that is easily punched, cut or drilled, with enhanced UV inhibitors against outdoor weathering (UV rating f1 per UL746C). The cover closes with two 316 stainless steel lockable snap latches, and the snap latches include a provision for padlocking. The matching polycarbonate cover is solid, with the light gray finish of the polycarbonate material. A captive, oil resistant FIP polyurethane gasket provides a positive seal. The molded hinge uses a 316 stainless steel hinge pin. Wall thickness is .14 in (3.68 mm).

Nominal size is 12 in x 12 in x 6 in (305 mm x 305 mm x 152 mm); the enclosure measures 11.92 in (303 mm) high, 12.16 in (309 mm) wide and 5.98 in (152 mm) deep, with a shipping weight of 10 lbs (4.54 kg). Threaded #10-32 brass inserts are provided for mounting the optional PCJR1111 inner panel, which measures 10.75 in (273 mm) by 10.88 in (276 mm). The drawing lists optional back panel thicknesses of 0.100 in (2.54 mm) aluminum, 0.075 in (1.91 mm) white steel or 0.188 in (4.78 mm) PVC.

It ships with four polycarbonate feet for surface mounting; the drawing calls out 4X .32 in (8.17 mm) mounting holes. Stainless steel 316 screw fasteners are used and mounting hardware is included. The solid-cover PCJ12126L is UL 508A and cUL (CSA 22.2 No. 94) Type 1, 2, 3, 3R, 4, 4X, 12 and 13, meets the same NEMA types and IP66, is V-0 per UL 94, and is RoHS and REACH compliant. Operating temperatures run from -35 °C to 130 °C (-31 °F to 266 °F), with an impact index of 16 J (12 ft/lb).