The 1550WPBK is a slim black watertight diecast aluminum enclosure measuring 80 mm x 55 mm x 21 mm, finished in textured satin black powder coat and supplied with an IP66 gasket. It suits compact electronics, sensor heads and control modules that need a small, finished-looking metal housing.

Tough satin black polyester powder paint gives a lasting finish even after the box is machined, and black screws are included to enhance the assembled look. Construction is die-cast aluminum alloy with a lap joint against dust and splashing water; the lid is held by M3.5 x 0.6 x 12 mm stainless steel Philips head machine screws into factory tapped holes.

Listed size is 3.15 in x 2.17 in x 0.83 in (80 mm x 55 mm x 21 mm); the series table gives 3.15 x 2.17 x 0.98 in (80 x 55 x 25 mm) including the 4 mm (0.16 in) lid. The drawing shows 76.13 mm [3.00 in] inside box length and 51.33 mm [2.02 in] inside box width. Shipping weight is 0.18 lbs (0.08 kg).

Inside, the walls have no ribs, and a 2° lower draft angle eases PC board mounting. The EVA foam gasket is shipped loose inside the enclosure, is rated up to 65°C (149°F), and gives IP66 when properly installed with lid screws torqued at 55 cN.m.

The 1550WPBK is RoHS and REACH compliant and shrink wrapped. Accessories for this size include 1550PEGASKET and 1550PSGASKET gasket pairs, plus 1550MS100BK replacement screws and 1550MS50TBK tamper-resistant screws for black versions.