The 1590TRPBLG is a narrow trapezoid painted diecast aluminum stomp box enclosure, powder coated in a light gray finish matched to RAL 7035. The tapered outline, 62 mm wide at the small end and 79 mm at the large end, gives pedal builders and effects experimenters a vintage-style alternative to a plain rectangular box without giving up a 112 mm length.

Box and lid are diecast aluminum alloy, a tough material that is still easy to machine. The smooth glossy polyester powder coat gives a lasting finish, even after machining, and accepts labels or silk screening easily. The purchased assembly includes the box, lid and 4 cover screws that thread into 6-32 UNC holes; recommended torque is 50-55 cN.m (71-78 ozf.in), or 25-30 cN.m (36-43 ozf.in) with a gasket.

The part page lists 4.41 in x 3.11 in x 1.38 in (112 mm x 79 mm x 35 mm). The series table gives a length of 4.41 in (112 mm), width at the small end of 2.44 in (62 mm), width at the large end of 3.11 in (79 mm) and depth of 1.54 in (39 mm). On the drawing the box is 112.00 mm long and 39.20 mm high overall, with 106.29 mm inside length and 35.20 mm inside height. Maximum P.C. board dimensions are 71.66 mm and 105.29 mm. Shipping weight is 0.37 lbs (0.17 kg).

Lap joint construction protects against dust and splashing water, and the part is rated IP54. A liquid resistant version with a silicone gasket is offered separately as 1590WTRPB. The part is RoHS and REACH compliant, ships in shrink wrap, and solid models are available in STEP or IGES.