The SR-SHELF-MDEXTR Extender and Accessory Rack Shelf by SnapAV is a sturdy and reliable rack shelf designed for professional networking and server setups. With a 3U rack capacity and unit height, this rack shelf provides ample space for organizing and mounting equipment in a secure and organized manner. Perfect for enterprise networking setups, the SR-SHELF-MDEXTR ensures a strong and stable structure for your valuable hardware.