The most versatile, fastest assembled, welded-frame knock-down rack in the industry. Mix and match to create a full size rack, attach to the wall, or place in furniture--the options are endless. S2 racks are incredibly sturdy and offer the strong support you need for equipment. The solution assembles in less than 5 minutes and ships flat for an ultra-easy install. - 15U and 20U Sizes for five different height combinations - Free standing or wall mountable –on-wall- swing-out accessory available - Supports up to 600lbs on floor and 200lbs on wall - Compatible with all standard Chief accessories - Ideal for preloading equipment - Ships UPS