The Middle Atlantic SNE30D-4542-P1 is a fully configured Security Network Enclosure designed for digital (IP-based) security systems that require high-density cabling, network equipment, and servers. It features passive ventilation for data centers with a 70% open area vented front door and a pair of split flush mount locking side panels. The enclosure. Includes 2 pairs of adjustable cage-nut rackrails (with 6mm hardware) and is compatible with the optional Tool-Free Lever Lock system, which accommodates small devices such as encoders, power supplies, and Access Control Systems. Key features include: 30in width and 42in overall depth, 45 rackspaces, 100 6mm cage-nuts/rack screws included, passive front-to-back cooling, 70% open area split rear door, solid top with brush cable pass-through, UL/ETL listed and seismic certified, 2 pairs of adjustable cage-nut rackrails, 100 6mm cage nuts and rack screws, 4 leveling feet, and 4 casters. The enclosure's design ensures optimal thermal management and secure mounting for all your digital security system needs.