BDI Cirrus 8158, Triple Wide Tall Enclosed Cabinet ( Espresso Stained Oak) Hidden Wheels -- Even when fully loaded, can be moved by one person to or away from the wall for easy rear access to cables & connections. Cable Management -- Keep cables organized with an integrated cable-management system. Adjustable Shelves -- Position shelves at varying heights to suit your preference and accommodate additional or larger components. Flow-Through Ventilation -- Vented design allows air to circulate up through bottom panel and between shelf compartments. Heat vents out through the back panel, keeping hot-running components cooler.