Royal Racks 2 Pairs (4) Side Panels for ROY2216 42U AV Rack Put some meat on them bones! Just add these side panels to your 42U Skeleton Rack. Perfect for the job where you’ve got lots of equipment to integrate and need a Home Theater Rack that is larger than our 21U. For shipping and installation purposes, they’re split into four panels, two for each side. Plus, dividing the sides into quads keeps them light weight and easy to manage. Vented for your Benefit Our Rack Sides offer vents located at the top and bottom for better air circulation, allowing your equipment to stay cool and perform properly for extended use. Strong Our Rack Panels come with two cross bars (one for each side)…these bars install mid-way up on the rails and join the two panels for each side, making this Royal Rack extremely rigid!