18 in. (45.7 cm) Polished Chrome Tube for 4 in. (10.2 cm) Freestanding FDCs is a durable steel tube that connects to an angled exposed FDC with a 4 in. (10.2 cm) outlet for use as an exposed sidewalk fire department connection. This seamless polished chrome tube has an inside diameter of 4 5/8 in. (117 mm) and is 18 in. (45.7 cm) long.
This tube connects to a building's fire sprinkler or standpipe system through buried pipe. Clearance of three feet or more must be maintained around most freestanding FDCs to provide fire professionals with sufficient room to secure hoses.