Metal 66 block apparatus box, fits two 4 x 50 or 6 x 50 block, includes metal, snap-on cover. Apparatus Box for 2 Connecting Blocks is used to terminate and fan out horizontal distribution cable. Furnished with a snap-on cover, distribution rings and mounting hardware These offer greater flexibility where space is limited Reversible snap on covers are provided with four pre-drilled and threaded holes for use in mounting cable clamps with the box Constructed of green metal Designed to be mounted on vertical flat surfaces of plywood, fiber board or masonary.