Economical CPU Holder, CS-21 STURDY: A stale storage solution for your computer towerhigh tensile nylon webbing straps adjust to fit cases with a circumference up to 57.5 weighing up to 44 pounds. EASY INSTALLATION: Attaches securely to the underside of you desk (must be at least  thick) and has protective rubber pads and anti-skid straps. VERSATILE: In addition to standard rectangular computer towers, this holder can accommodate cube-shaped, horizontal, and other non-conventional case shapes. STAY ORGANIZED: Keeps your computer tower off your desk, freeing up valuable storage space.