Linear HD18 OpenHouse 18" Hinged Door Depth Extension Kit for H318

Designed to expand capacity and improve serviceability, the Linear HD18 OpenHouse 18-inch Hinged Door Depth Extension Kit converts your H318 structured wiring enclosure into a deeper, more secure equipment cabinet. By adding 18 inches of depth, this mounting extension lets you accommodate larger power supplies, PoE injectors and other tall devices commonly used in security, surveillance and monitoring systems. The ventilated white cover with a smoked Plexiglas window protects installs from dust while allowing quick visual inspection of status LEDs and wiring without opening the door.

Engineered for installers, the HD18 accepts the optional H208 lock kit for enhanced physical security and is ETL listed to meet industry safety expectations. The hinged design improves passive cooling and provides easy access for maintenance and cable management, reducing service time for integrators and IT staff. Ideal for home automation, CCTV, access control and structured networking deployments, the Linear HD18 is a practical upgrade to maximize your existing H318 enclosure. Add the HD18 to your next installation to simplify wiring, improve cooling and secure critical equipment.

• Adds 18 inches of cabinet depth so you can install larger power supplies, PoE injectors and taller modules without reconfiguring the closet
• Ventilated hinged door with smoked Plexiglas window secures equipment while providing quick visual access for monitoring and status checks
• Improves passive airflow to help keep surveillance, networking and security components cooler and more reliable
• Accepts optional H208 lock kit and is ETL listed for secure, code-conscious installations in homes and light commercial sites
• Simple retrofit for Linear H318 enclosures—reduces installation time and avoids replacing your existing structured wiring cabinet