Designed for field installation in standard clamp-cover junction boxes. Includes complete installation instructions. One hole must be drilled or punched in the cover to receive the cylinder lock. To install, simply remove the standard slotted latch and insert the kit. Complete installation instructions are furnished. Catalog number AL7A includes a Type L7 T handle and all hardware. Catalog number AL12AR includes a Type L12 cylinder lock, cam and all hardware. Latch and lock fit Type 1 enclosures and hinged-cover pull boxes.