Shields consist of a transparent 2-mil polyethylene skirt, 10" long, clamped to double wooden rings at top and bottom. The design permits outward flow of heat at the top under a 10" diameter aluminum cap mounted above the shield. They include a porcelain socket, and metal wire guard to protect the electrical cord when hung from a branch or collecting sheet. Shields are fully collapsible for transport. Two extra polyethylene skirts, which may be replaced without the need for tools, are included.

The 2818B is used to protect the 2818 and 2816 mercury vapor lamps from moisture. It has a porcelain mogul base socket, a connector to the ballast box, and metal hanger with cord protector. Shield collapses to 3.5" high; weighs 1.25 pounds.