The 1591BSFLBK is a black general purpose ABS enclosure in the 1591B size with wall mounting flanges molded into the lid. The body measures 4.41 in x 2.44 in x 1.21 in (112 mm x 62 mm x 31 mm), and the flanged lid brings the overall length to 137.40 mm [5.409 in] on the drawing, so the unit can be screwed directly to a wall, panel or chassis.

Inside, card guides molded into all side walls accept 1.5 mm (0.062”) thick boards for vertical PCB mounting. The drawing lists an interior of 105.78 mm x 55.78 mm x 26.90 mm with 21.90 mm guide height and 2.13 mm slot width.

This version is molded from GPABS with a UL94 HB flame rating and uses self-tapping screws into fully plastic posts. The purchased assembly includes box, lid and 4 cover screws (black on black enclosures), with a recommended torque of 42-57 ozf.in (30-40 cN.m). The drawing also lists 1593ATS50 and 1593ATS100 #4 X 1/4" (6.4mm) self-tapping P.C. board screws for the lid.

Lap joint construction provides IP54 protection against dust and splashing water. The 1591BSFLBK is RoHS and REACH compliant, weighs 0.15 lbs (0.07 kg) shipped and comes shrink wrapped.