WL9-4821 Engineering PP Medical Equipment Case

The outer shell is 475 x 363 x 210 mm and the internal cavity is 447 x 312 x 194 mm. Externally the case occupies 475 x 363 mm while the usable floor inside is 447 x 312 mm, the difference coming from the wall section, the seal channel and the moulded closing geometry rather than measurement error. Size a load from the inner dimensions, never from the outside, because outside figures overstate capacity. A 447 x 312 mm floor with 194 mm of inner height is a mid-size whole-unit body, and the 50 mm lid is deeper than the 25 mm and 38 mm lids elsewhere in the series, so equipment with connectors or panel bosses on top still goes in complete.

The lid adds 50 mm of internal depth and the base adds 144 mm, giving 194 mm of combined inner height. A 50 mm lid over a 144 mm base gives one of the larger lid allowances in the 9 Series, so equipment can be closed with its cables connected, while the 144 mm base still lets probes and other long items stand.When judging whether a body suits your contents, read the base figure first, because it sets how tall an item can stand, while the lid figure decides how much headroom remains above it. Only the sum of the two is usable height, and when measuring a part, include handles, connectors and bosses, or the lid will press on it once closed.

The shell uses a sealed closure and provides an IP67 waterproof and dustproof rating. When a medical unit travels complete, the sealed cavity limits dust reaching vents and connectors and makes the outside of the case easy to wipe clean. The rating applies to the sealed cavity of the case itself, so if you store moisture-sensitive contents, pair it with desiccant or a humidity management accessory and check the sealing face for trapped debris every time you close the lid, since a single trapped fragment undermines the seal.

The factory usage category for WL9-4821 is medical equipment cases, under code 906. The 447 x 312 x 194 mm cavity with a 50 mm lid suits mid-size medical equipment, detection instruments and their accessories carried complete, and the case closes with the cables still connected, which saves unplugging before every move. A 4.5 mm wall and a 3670 g unit weight fit vehicle transport and movement between sites, while frequent hand carrying is not the intended use. Where the equipment is low but the accessory count is high, a layered lining keeps the load from shifting inside.

WL9-4821 is poly-bagged individually and packed 6 per carton measuring 765 x 485 x 650 mm. At 3670 g per unit the carton sits in the upper twenties by gross weight, which is normal for two-person handling or a pallet truck. The same carton size is used for WL9-5021, also at 6 pieces, so a mixed order can share one carton and pallet plan and only needs unit weights and stacking strength checked per model. Carton breakdowns, pallet plans and container loading layouts can be supplied with the order.