No more cutting and sawing to fit your manifold and valve installation. The Orbit Valve Box Base does the work for you with multiple knock-out pipe slots. The easily removable slots are aligned to allow for up to 4 sprinkler header lines from the valve manifold. Simply remove the appropriate amount of slots for your installation and insert your 1 3/4 or 1/2 lines. No special tools required. Comes with 2 mouse hole covers that can be easily snapped out of the base to cover valve box openings for greater valve protection.