Adjustable Shelf Rail (34-102100-GRU1K)

These steel Rack Mount Adjustable Rails are compatible with most 4-post racks, Dell, APC, IBM and HP Compaq cabinets. They can be installed in 19", 23", or 30" wide cabinets. With a 2.5in ledge, and ability to support up to 200lbs when mounted in a 4-post rack, these adjustable rails kits are a great way to rack mount devices that do not have mounting hardware.

Both 10-32 and 12-24 mounting screw kits are included to allow mounting on either thread pattern.

Download Icon34-102100 Dimensional Drawing (PDF)

Download Icon34-102100-GRU1K Data Sheet (PDF)

Gruber 34-102100-GRU1K - Click to enlarge

Price: $38.79
NOW: $34.20
Save: $4.59

34-102100 Application

Application Example


  • Adjustable depth from 20.25" - 33.25"
  • Ledge Width: 2.5in
  • Up to 200 lb load rating
  • Requires only 1U of rack space
  • 14 gauge rolled steel
  • Pressed Pemnuts
  • Hardware included

This rail kit includes:

  • Right Adjustable Rail System - (From 20.25" to 33.25 " Depth)
  • Left Adjustable Rail System - (From 20.25" to 33.25" Depth)
  • Individually Packaged in Heavy Cardboard Box and Wrapping
  • Mounting Hardware Kit - (16) 10-32 1/4" - (8) 12-24 3/4" - (8) 10-32 3/4"
  • Durable, Industrial Black Satin Powder Coating


Please note: the 34-102100 is also known as the 34-102100-GRU1K.

34-102100-GRU1K Accessories

Question: This looks like a more affordable fix than these expensive enclosure shelves, I need at least ten, are these in stock?
Answer: Thank you for your inquiry. The adjustable shelf rail is a very common, affordable "fix" for non-rackmountable gear. Fully adjustable, the rails are versatile and will fit racks up to 33.25" deep. These are in stock and ready to ship, typically we can get them out the same day the order is placed.

Question: Do you have 60 sets of these in stock? What would delivery time be to Plano TX if ordered today?
Answer: Thank you for your inquiry. In order to provide the most accurate information, our sales team will email you directly with the information you have requested.

Question: do you have the same rails for a 14" deep rack
Answer: Thank you for your inquiry. Unfortunately, these rails do not come in a shorter mounting depth option.

Question: I just need one set of these rails/racks, will they ship today if ordered w/i 30 minutes?
Answer: Thank you for your inquiry. Generally, orders received by 12:00 PM Mountain will be processed the same day, but may not ship out immediately. Many of the products we carry require a lead time and shipping is dependent on available stock. That being said, we always attempt to process and ship an order as quickly as possible. For the best opportunity to have the product ship today, we would recommend contacting your Server Racks Online representative at 1-866-722-577 or via our online chat feature.

Question: What is the part number for this item? I am trying to fill out a purchase order through my company.
Answer: Thank you for your inquiry. the part number for this unit is 34-102100.

Question: What is the minimum width of the equipment that this will support?
Answer: The minimum install width appears to be in a 19in rack (can also be installed in custom width racks for shorter widths). As far as equipment width, the flanges are 2.5 inches wide on each side. We would think you would want at least a half inch on each side (maybe more depending on the weight of the device).

Question: Do you have any cad models of this?
Answer: Thank you for your inquiry. Unfortunately, now CAD models are available for this item.

Question: will these rails accomadate an x3550 ibm server with a width of 17.3 inches?
Answer: Thank you for your inquiry, The Adjustable Shelf Rail would accommodate an IBM x3550 server - 17.3"W is a typical measurement for gear mounted in a 19" EIA standard rack. The adjustable shelf rail is a very common, affordable "fix" for non-rackmountable gear.

Question: Do make delivery in Luxembourg ? If yes, is there a special cost or not ?
Answer: Thank you for your inquiry, We do sell some of our product set to Luxembourg, including these adjustable shelves. Please see below for our International Order Guidelines. International order guidelines: - Minimum order amount - There is a $1,000 minimum order requirement for all international orders. - Administration fee - There is a $100 international order processing fee applied to each international order. - Payment method - PayPal, Wire Transfer, International Money Order, or Credit Card (only if billing address is within the United States) - Shipping costs - Shipping charges on Server Racks Online are estimated to the best of our ability. However, on occasion, discrepancies may occur especially for International Shipping. Should the original shipping estimate noted on the ordering page be less than the actual shipping cost, the charges will need to be adjusted accordingly. Confirmation on this increase will be requested from the customer, until that confirmation is obtained the order will be placed on hold. Please note that there may be two portions of shipping in the event that the warehouse is unable to ship internationally. Should this be the case, the order will be shipped to our headquarters location and then out to the delivery address. - Ship Via- The use of a 3rd party shipping account is required for all international orders. - Lead time and availability - Please note that there is a standard 2-3 week lead time for international orders. - Tax, tariffs, duties and customs - The customer is responsible for all costs relating to the tax, tariffs and duties due on the order, as well as management and resolution of any issues regarding customs. - Returns - Server Racks Online is unable to accept any returns for international orders. - Technical Assistance - For technical issues associated with an online order the manufacturer will need to be contacted directly by the customer. If you would like to place an order, please feel free to contact your Server Racks Online sales representative directly at 1-866-722-5776, at, or via our online Chat functionality.

Question: Do you have a similar set of rails that will adjust down to 17.75 inches deep?
Answer: Thank you for your inquiry. Unfortunately, we do not have anything in that price range. Probably the best bet would be the 1U universal rack rail kit: These units have a mounting depth of 10-31.75 inches and include a cable management bar (installation is optional).

Question: Can you tell me the length of the rail?
Answer: Thank you for your inquiry, The dimensions for the Adjustable Shelf Rail are as follows: Height: 1U / 1.75" Ledge width: 2.5in Depth (adjustable): 20.5" to 33.25" Please let us know if there is anything else we can help you with, or if you would like any help with designing your application.