The RP1150 is a water-tight general-purpose enclosure moulded in polycarbonate with an opaque lid, measuring 4.92 in x 3.35 in x 3.35 in (125 mm x 85 mm x 85 mm). It is intended for OEM engineers, electricians and integrators who need to mount printed circuit boards or components in a sealed box with a UL94 V-2 flame rating.

Hammond's series table and drawing list this number as the Off-White Polycarbonate opaque-lid version (the part page states Light Gray). The gasketed lid uses two-piece tongue and groove construction to keep out oil, dust and water, and its smooth recessed top area accepts a membrane, label or silkscreen.

This is the tallest 85 mm version of the 125 x 85 mm RP footprint, with 78.50 mm of inside height for stacked or tall components on a PC board up to 117 x 77 mm. The drawing gives overall dimensions of 125.50 mm [4.94 in] long, 86.00 mm [3.39 in] wide and 85.00 mm [3.35 in] high, with inside dimensions of 118.71 mm [4.67 in] long, 78.71 mm [3.10 in] wide and 78.50 mm [3.09 in] high. The series ordering table lists this size as 4.96 in (126 mm) x 3.39 in (86 mm) x 3.35 in (85 mm). Shipping weight is 0.49 lbs (0.22 kg).

Each purchased assembly includes the box, lid, string gasket, four PCB screws and four lid screws. The lid is secured with self-captivating M3.5 stainless steel machine screws threaded into corrosion resistant bushings for repeated assembly and disassembly; recommended torque is 43-50 ozf.in (30-35 cN.m). Internal mounting holes accept M3 self-tapping screws, and optional inner panels are available as STC113 (3 mm black ABS) or STA113 (1 mm metal).

The RP1150 is designed to meet IP65 and is RoHS and REACH compliant. Hammond cautions that acetone, ketones, thread-locking compounds, cutting fluids and strong solvents can damage ABS and polycarbonate enclosures, so check chemical compatibility before use.