Locker Base Kit is constructed of 1 in thick HDPE material and includes base front, 2 end caps and all mounting hardware for a bank of 3 Standard or Z lockers. Constructed of Black High Density Polyethylene plastic. The Locker Base Kit is 36 in W, 12 in D and 3 in H. Mills Company warranty of 20 years on plastic components against rust, delamination and breakage under normal use.