The GS-Plus spray heads include "flip top" dust covers

Corrosion & chemical resistent paint

22-gauge stainless steel and is die-formed with one-piece construction

the unit measures 17-5/8 inches in length by 56-5/16 inches in height and extends from the wall by 10 inches once installed

Ultratech Filter Sock, Activated Carbon, Removes Helps remove certain chemicals, hydrocarbons and odors - 9453 Diameter-0.5" The GS-Plus spray heads includePlace one or more UltraTech Ultra Filter Sock in front of ditches, downspouts, gullies, or storm drains to help keep harmful substances from entering a stormwater system. Water quickly passes through the woven polymer casing, and filtration media inside the sock removes pollutants. Looped ends allow the sock to be staked in place and to ease transport. Units can be overlapped to cover larger areas or to handle a large quantity of a single contaminant.