Lock boxes require fewer locks and are lighter than hasps on delicate energy isolating devices like circuit breakers. Our mini wall lock box is injection molded using Isoplast polymers for extra durability. Excellent chemical and heat resistance properties and impossible to corrode. Patented lock rails hold up to 8 padlocks (locks not included). Slot in front allows keys to be inserted when box is locked and transparent window lets you view contents from the outside. Pre-drilled holes in back allow for easy wall-mounting. Comes with 6 hooks for hanging keys, locks, etc. inside box. Extra key hooks (50939) are available in packs of 12. Lock box dimensions are 6 1/5"H x 4"W x 5 1/2"D.