Brand Name: Tripp Lite Product Line: SmartRack Product Name: 1U Universal Adjustable Rack-Mount Shelf Kit Marketing Information: Tripp Lite's 4POSTRAILKIT1U is an adjustable rack-mount shelving system that supports 1U UPS systems as well as other 1U pieces of network or power protection equipment. Expandable 4-post mounting rails provide front-to-rear support for equipment with 17.5" wide rectangular chassis. Rails adjust to any fit between 20.5" and 36". Includes mounting hardware that is compatible with square hole racks. Supports up to 150 lbs. Product Type: Rack Mount Product Information Compatible Device: UPS Maximum Load Capacity: 150 lbs Physical Characteristics Color: Silver Height: 1.7" Width: 1.5" Depth: 20.5" Weight (approximate): 3 lbs Miscellaneous Package Contents: 2 pieces of Left Rail (Front and Rear) 2 pieces of right rail (front and back). Mounting hardware Installation guide Warranty Limited warranty: 5 years