which remains dust-tight during operation to resist the ingress of dirt or airborne contaminants

and there is a keyed tumbler lock on the door to discourage theft

Cross Reference: Bell & Gosset 3K515

Indoor stainless steel combination safety shower with eye/face wash - top entry

barrier-free swing-down eye/facewash with drain pan and wall-mounted shower head

Watts 16 3/16 inL Frostproof Wall Hydrant, 12 in Wall Thickness - HY 420 12 Toilet Partition Door which remains dust-tight during operationThese hydrants are made by Watts. They mount to an exterior wall of a building to provide access to water in outdoor areas of a building. Wall hydrants come with a key that opens or closes the valve to start or stop the flow of water, which helps prevent unauthorized use of the hydrant.,Wall hydrants have a square flange that can be mounted flush against an exterior wall of a building or installed into a round or square box to recess the hydrants into