"I won't sell it if I won't use it!!" - Alan, Owner of SpeakersForMusic. Seriously. New, unused item from US distributor. Front and rear rack rails for mounting equipment front or back sides: Front and back are interchangeable New Shallow size! 8 inch Shell! (Please measure your equipment for mounting, suggest about 6"- 7"deep gear mounting depth) Rack Spaces/Units: 4U Rackable area: 7 inches high, 19 inches wideRack Depth without lids (Shell): 8.1 inches, the lids are 2.75 inches deep each With Lids: 14 inches deep, 21.1 inches wide, 10 inches tall Shipping box is 15 x 11 x 23 inches. Rack weight is 9 pounds. Shipping weight with box is 13 pounds.Rubber Gasket in Lids: Seals from minor liquids and dustZippered Screen Pocket in 1 lidRack Screws and Washers included Moderately priced molded ABS & Aluminum lightweight 4 space equipment rack, generic, not a name brand but produced just like higher priced racks. The case shell without lids is 8 inches deep, great for smaller devices like wireless units, mini bass amps, tuners, processors, guitar preamps. Front and Rear Rails with replaceable steel threaded strips for mounting your rack equipment; screws and washers included for your convenience. Butterfly steel twist latches. Side mounted folding carry handle. Stack-able with similar racks. What's a "U"? It stands for Unit or Rack Unit which is standardized at 1.75 inches tall. Manufacturer's warranty: 3 months 3, 4, 6 Space Shallow Racks also available & Standard Depth Racks up to 10U spaces Be sure to add me to your favorites list! Fine Print: Items are guaranteed to be as described. Please pay for your items within 3 days.Racks are usually drop shipped from the US distributor with UPS Ground or FedEx. Racks may also ship from Lincoln, NE using FedEx Ground or Smart PostPlease contact us about any issues or problems with your order. We strive for high quality products and service! Speakersformusic will always post positive feedback! Please leave positive feedback for us! Guaranteed safe delivery in new condition. "I won't sell it if I won't use it!!" - Alan, Owner of SpeakersForMusic. Seriously. Thanks! 555-19502