The Hammond PCJ181610H is a Type 4X polycarbonate junction box from the PCJ Series with a hinged screw cover, a solid polycarbonate cover and polycarbonate feet for mounting. It is designed to insulate and protect controls and components indoors or outdoors, in settings such as pump controls, waste water, irrigation and solar/wind sites.

The 18 x 16 x 10 inch nominal body is one of the larger boxes in the family, with a 9.81 in depth. The ordering table lists the enclosure at 18.04 in (458 mm) high, 16.04 in (407 mm) wide and 9.81 in (249 mm) deep (nominal size 18 in x 16 in x 10 in (457 mm x 406 mm x 254 mm)), and the matching optional inner panel, part no. P1868, measures 16.88 in (429 mm) x 14.88 in (378 mm). The drawing calls out a wall thickness of 0.19 in (4.8 mm). Shipping weight is 10 lbs (4.54 kg).

Box and cover are injected polycarbonate that is easily punched, cut or drilled, with enhanced UV inhibitors against outdoor weathering. The polycarbonate has a light gray finish. The cover is secured by (2X) #10-32 brass inserts and 316 stainless steel captive cover screw and seals against a FIP polyurethane gasket; the hinge is specified as (4X) snap-in polycarbonate hinge knuckle.

For installation, this model ships with (4X) polycarbonate feet secured with (4X) #10-32 brass inserts, 316 stainless steel flange and feet screws. Inside, (4X) #10-32 brass inserts and plated carbon steel truss screws are provided for mounting the optional back panel, which the drawing shows in 0.100 in (2.54 mm) aluminum, 0.075 in (1.91 mm) white steel or 0.188 in (4.78 mm) PVC.

Series standards: UL 508A and cUL Type 1, 2, 3, 3R, 4, 4X, 12 and 13, IEC 60529 IP66, V-0 per UL 94 and UV (f1) per UL746C. The part is RoHS and REACH compliant; operating range is -35 °C to 130 °C (-31 °F to 266 °F).