Durable ABS boxes with quarter-turn ball valves. Mounts securely to stud or between studs;All models can be used in fire-rated walls;Installs quickly – reduces time at rough-in and finish;Single product replaces multiple items – reduces mess, waste, buying, stocking, handling, etc;Union connection makes valve easy to repair or replace;Full-flow, 600WOG valves are code-compliant;Included debris covers protect boxes/valves from dust, mud, and paint