As of 04/01/2019 Open Frame Racks, Inc. will be collecting sales tax for all states (excluding NH, OR, MT, AK and DE) in which require the collection of sales taxes by online sellers. As of 04/01/2019 ALL tax-exempt resellers will need to have a tax-exempt form on file with Open Frame Racks, Inc. AND place new orders through our sales team to be processed correctly. Please e-mail your tax-exempt forms or questions to Thank you for your understanding - Open Frame Racks
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Question 1: What is a “U space”? A “U” or “RU” is a unit of measurement that is commonly referred to when discussing rack-mounting equipment. A “U space” is 1.75 inches and is commonly 3 hole spaces tall.


Question 2: What is the most commonly used rack? We find that most of our customers typically have a 4-post square hole rack. It’s called a “4-post rack” because there are 4 uprights and as you can see the holes of the rack are square.


Question 3: What is a 19 inch rack? A 19 inch rack is the standard EIA-310 server rack. The term “19 inch rack” comes from the width of the equipment in the rack.

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