3 Cross Rails & 3 Adjustable Legs Center Support System



fs_prod1 (1)Check Out All The Highlights of the 3 Cross Rails & 3 Adjustable Legs Center Support System. You can’t buy a better adjustable bed frame center support for the money.


  • STURDY SUPPORT TO STRENGTHEN YOUR BED: X-Bracing keeps frame legs in a straight up and down vertical position. Stops center legs from sliding out of place. Hardened-steel cross beams work in combination with a super-duty clamp and X Support to deliver the needed and required support for your bed, mattress set, and you. Replaces the need for cheap wood bed slats. No more sagging mattress!
  • FITS MOST BEDS: Designed to work with California King, Eastern King, King, Queen Double / Full-Size beds. Works with Mattresses, Box Springs, and Foundations. Compatible with steel, iron, metal, and wood bed frames (bed frame not included).
  • EASY TO USE: Clear, uncomplicated instructions are included. Your pre-drilled holes let you firmly attach the steel cross beams to your bed using the included wood screws.
  • CHANGEABLE HEIGHTS: Without difficulty adjusts to fit your bed. Fits heights from 6 1/2 inches up to 15-1/2″tall. For use with headboards footboards and side rails with lip (Not Included with this support system).
  • FAMILY OWNED MADE IN THE USA: STL Beds is a 33-year-old company committed to “Guarantee Proper Support for your bed or your money back”.

Learn More Below:

Price Includes:


Best Selling Stamp3 Cross Rails & 3 Adjustable Legs Center Support System


GS-3 XS Center Support For Wood Side Rail Beds is our best-selling center support system and is built by Glideaway. These Cross Rails & Adjustable Legs Center Support System fits the following sizes:


  • Double/Full
  • Queen
  • King
  • California King

The ground-breaking design of the GS-3 XS Center Support system makes it very strong and is designed to retrofit and strengthen existing wood beds that include wooden side rails. The additional bracing is easy to install.


The 3 cross support bars and 3 legs included adjusting from bed heights as low as 6½ inches, up to 15½ inches tall. This measurement is taken from the bottom of the box spring to the floor. (Headboard and footboard not included and are shown for illustration purposes to demo how the 3 center support connects). This product typically ships within 1-2 Business days.


Easy Installation – Secure  Support


Easy to follow instructions, see the video & PDF below. Additionally, instructions are packed in the shipping carton. The “Gripper Clamp gets the job done, you simply connect the pieces together. Unique Positive-Locking designed legs actually become even more structurally solid when additional weight is applied to the bed. 3 cross rail supports are all interconnected to a center head-to-toe X-System. This unique feature is designed to keep the legs sturdy and in position for years to come.


One Of A kind X-System


This matchless middle support system does just that and more. Not only does it provide the very best support for your mattress and box spring, but it relieves your headboard, footboard, and side rails from damage that can result from too much weight. How’s that for assurance?


Adjustable Height


The GS-3 XS Center Support has extra solid support from legs that are adjustable allowing for a variety of bed heights and configurations making it versatile enough to accommodate almost any bed and size including Full /Double, Queen, King / Eastern King, and California King beds with headboards, footboards, and side rails.

Fits beds from 6½ inches, up to 15½ inches tall. Measurement is taken from a wood lip located inside of wooden side rails.


If your wooden lip measurement is lower than 6½ inches, see the SGLP-3


Designed For Beds With Wooden Side Rails

Glideaway’s GS-3 XS Adjustable Center Support System is built to work on wood side rails to help ensure your rails will not bend, crack, or break. Glideaway’s middle slats cross from side to side and include pre-drilled holes on each of the ends. The steel slats rest on the wooden lip and rest on your bedside rails.


Simply secure them with the included screws to ensure the GS-3 XS system will not move out of position. This added support will guard against the bowing, bending, and breaking of your wood bedside rails when installed properly.


Limited Lifetime Guarantee

Our middle support system has a Limited Lifetime Warranty from Glideaway Manufacturing.


Is your wooden lip lower than 6½ inches? Reach out to us directly. We may have another solution to accommodate the lower height.


How To Assemble The GS3XS Cross Supports For Wooden Bed Frames


Proudly built in St. Louis Missouri, USA

Additional information

Weight 28 lbs
Dimensions 46 × 8 × 3 in
Assembly Instructions



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Height to Lip

5.5 inches to 7.5 inches, 6.5 inches to 15.5 inches

Product Features

Want To Make Sure This Will Work With Your Bed Frame?


Please Review the following Fit Criteria or contact us directly for assistance.


3 Cross Rails & 3 Adjustable Legs Center Support System Fit Criteria


  1. Is your bed a (King, California King, Queen, or Full) size?
  2. Does your bed have a Headboard, Footboard, & Wood Side Rails? Includes wood screws. These thread into wooden lip inside wood side rails.
  3. Is there a wooden lip located on the inside of the wooden side rails? (This is where traditionally wooden slats will rest).
  4. What is the Measurement from top of the wood lip, down to the floor? Cannot be less than (6 ½) inches or more than (15 1/2″)
  5. For beds with headboard, footboard & Steel Side Rails you will need to purchase six ¼ inch diameter x 1/2 long bolts with nuts OR let us know if you need some.
  6. Steel side rails? REQUIRES THE TOOLS TO DRILL THROUGH High Carbon STEEL RAILS. Existing holes will NOT line up with the holes of this support system.
  7. You must have both a mattress along with one of the following:
    1. Boxspring
    2. Foundation
    3. Bunkie board
    4. A Platform does not work with wood slats.

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