DVR Lockboxes with cooling fans are made of super strong 16 gauge steel with removable lid for easy access, locking front door with cam lock and 2 keys, air vents, cooling fan(s) and power cord(s) for superior cooling, rubber bumpers and durable textured powder coat finish. 21" x 24" x 8" (L x W x H). All lockboxes are designed to fit custom wallmount brackets.