Made from heavy-gauge cold-rolled steel can support up to 250 lbs. of equipment Adaptable for network, security, and A/V installations Lockable acrylic front door is removable and reversible 12-gauge steel rails provide a stable mounting structure second pair of rails can be added to for high density applications (sold separately) Doors are grounded to the cabinet frame Multiple cable entry slots provide greater flexibility during installation lace points to reduce cable clutter Mounting rails with 12-24 tapped holes and RU markings for easy equipment installation Doors and side panels are removable for convenient access to equipment rear hinge allows main section to swing out 90deg and disconnects from cabinet for easy mounting Conforms to UL(R) Standard 2416 for Audio/Video, Information and Communication Technology Equipment Cabinet, Enclosure and Rack Systems Includes 4 grounding kits, 48 x 12-24 mounting screws and washers, paper mounting template, and 2 keys 18U