The 1411FU is an unpainted aluminum utility case from the 1411 series, supplied in a natural aluminum finish without mounting flanges. At a nominal 4 x 2.2 x 3 in (102 x 56 x 76 mm), it is aimed at engineers and technicians who want a simple metal box for small electronics that they can machine and finish themselves.

Construction is two pieces: a bottom and a cover, both made from 0.04" (1.02 mm) aluminum panels. Each purchased assembly includes the bottom, the cover and four self-tapping cover screws. Replacement cover screws are available as 1421J6, a package of six 6-32 x 1/4" plated self-tapping screws.

According to the drawing, the assembled box measures 101.24 mm [3.99 in] long, 56.79 mm [2.24 in] wide and 76.40 mm [3.01 in] high. Usable inside space is 99.21 mm [3.91 in] long by 51.94 mm [2.05 in] wide by 74.37 mm [2.93 in] high. Shipping weight is 0.23 lbs (0.10 kg).

Because the aluminum is left unpainted, it is protected through manufacturing and shipping by a plastic film cover that keeps the finish clean and doubles as a removable drilling template. Hammond also offers factory modification such as milling, drilling and printing, and solid models are available in STEP or IGES.

The part is RoHS and REACH compliant and ships shrink wrapped. Other versions of the same 4 x 2.2 x 3 in size in the ordering table are 1411F (aluminum gray), 1411FBFBK (aluminum black w/ flanges), 1411FBFU (aluminum unfinished w/ flanges).