Quiet Cool Series 2 Bay Console Configuration Black Finish This model is ideal for use in isolating noise created by DVRs, hard-drive arrays and other equipment, which can have detrimental effects on the operator's attention and critical decision making ability. Standard front and rear, adjustable rack rails with numbered, space increments facilitate equipment mounting. Pre-installed, leveling feet allow for height adjustments and key-locked, lift-off, side panels feature vents to promote convective cooling. Removable, bottom plates feature 1/2", 3/4", 1", and 1-1/2" electrical knockouts and an integral, brush grommet allows for convenient.