The 1591DBG is a beige flame retardant ABS plastic case and lid in the 1591D size, 5.91 in x 3.15 in x 1.97 in (150 mm x 80 mm x 50 mm). The 1591D drawing lists it as FR ABS UL94 -V0 in beige, an option for products that call for a light, neutral housing color.

Card guides molded into all side walls accept 1.5 mm (0.062”) boards for vertical PCB mounting. Inside, the drawing gives 143.61 mm of length, 73.61 mm of width and 46.10 mm of height, with guides 41.10 mm high and 3.00 mm wide.

The lid accepts M3 - 0.5 machine screws into pre-installed brass inserts, suitable for repeated assembly and disassembly. The purchased assembly includes box, lid, 4 cover screws and pre-installed brass inserts, with a recommended torque of 35.5-42.5 ozf.in (25-30 cN.m).

Lap joint construction and an IP54 rating guard against dust and splashing water. The 1591DBG is RoHS and REACH compliant, weighs 0.29 lbs (0.13 kg) shipped and is shrink wrapped, UPC 623980547404. The drawing lists 1591DC clear lid and 1591Z card adapters as accessories.