

Whether you need to replace your entire sleeper sofa mechanism due to wear, damage, and/or malfunction, or your mechanism is in good shape and you only need to replace worn or damaged decking, we've got what you need! Here are our recommended steps for purchasing and installing your new replacement sofa/sleeper mechanism or decking:
Unlock the secret to replacing your sleeper sofa mechanism without a hitch. By securing the manufacturer and model number of your existing system, you'll open up the door to a hassle-free process.
No more head-scratching over similar-looking parts.
No more sunk costs on ill-fitting replacements.
No more sleepless nights over wasted resources.
The first step to replacing your sofa mechanism or decking is to find and confirm the size and model number of the mechanism you are replacing. Obtaining the manufacturer and model number of your current mechanism is critical to ensuring you receive the correct product. This is the only reliable way to match parts since many mechanism models can be very similar, but not the same, in appearance and dimensions.



1. Leggett & Platt and Hickory Springs* are the most common manufacturers. This will be different than the company that made your sofa (Ashley, Broyhill, Simmons, La‐Z‐Boy, and other sofa or couch manufacturers.)
2. The model number sticker will contain a variety of information and may appear in several different formats. For example: model numbers 6825 or 2568 are the same, and sometimes the manufacturer will list them both ways.
3. The numbers in the model number will tell you the size and series of the mechanism. For instance, in the example above, model numbers 6825 and 2568 both refer to a mechanism in the 25 series with 68 being the size.For more assistance finding your model number, click here to refer to our downloadable PDF guide.
*If you are looking for Hickory Springs decking replacements, please contact us directly.
IMPORTANT NOTE:
It's all in the brackets. When we talk about sizes, we're referring to the bracket-to-bracket width. A universally accepted standard by manufacturers. To ensure exactness, your measurement should span from one mounting bracket to the other, right where the sleeper and sofa frames come together. Remember, this isn't about the tubular frame or the decking.
After confirming your mechanism's size and model number, be sure to double check that the Sleeper Mechanism™ replacement mechanism or decking kit you are purchasing will be the correct fit for your needs. If you have any questions about mechanism compatibility, reach out to us via the contact form below.
Even if you second guess yourself, after you order a mechanism, we will email you to confirm the replacement you've ordered is correct and to confirm the delivery address and two contact phone numbers. Replacement mechanisms ship via Freight, so the carrier will also call you to set a delivery appointment to ensure someone is there to accept the shipment.



When repairing or replacing your sleeper sofa mechanism, it is prime time to replace the mattress as well. Not only will you save when purchased together, a new mattress will do a better job of conforming to the new replacement.
A comfortable mattress is essential for a good night's sleep on a sleeper sofa. Upgrading the mattress can greatly improve the overall comfort and user experience. Many older sleepers have thin mattresses that get less comfortable over time. Replacing your mattress may greatly improve you and your guests' comfort and sleep.
Remove the old mattress from the sleeper sofa and replace it with our WetBan™ Ultra Smart hand-crafted models.
View and pruchase WetBan™ Ultra Smart Mattresses here.
When it comes to custom furniture, it's crucial to understand that all dimensions provided herein are regarding replacements, and custom builds may need additional space and clearances depending on your design. Because construction methods and materials can vary, we recommend ordering your mechanism before starting your project to verify all measurements and spacing requirements.
Sleeper mattress dimensions are unique and different from regular mattress measurements, and a few more important details for custom projects, enclosures, and cabinet work are: You'll need to supply your own mounting screws or bolts. Remember that the mounting width isn't the same as the mattress size, subtract 8 inches from the mounting width to determine the correct mattress width.
This means that the measurements specified are the smallest acceptable size for the piece being crafted. However, it's equally important to recognize that most times, it's smart to build your custom furniture around the mechanism. Whether you are building a window seat, a custom entertainment center, or a one-of-a-kind piece that will hide the sleeper mechanism, we advise you to have the mechanism in hand to ensure proper dimensions.
This proactive approach not only enhances the overall aesthetic but also ensures that the custom furniture can be enjoyed to its fullest potential without any compromises. By understanding that the dimensions provided are minimums and embracing the concept of building around the custom furniture unit, you can create a harmonious and functional living or working environment that showcases the craftsmanship and uniqueness of your custom sleeper piece. We know this is a lot of information, so please let us know if you have any questions!



To update your sleeper sofa couch, after you have your new mechanism, obtain help from someone and follow our instructions in the free PDF file to remove the old mechanism and install the new one. Remove the mattress and any cushions before attempting to remove the old frame. Then, in accordance with the manufacturer's instructions, carefully remove the frame from the sofa. To install the new sleeper mechanism, download and read the PDF instructions. A pullout couch sleeper mechanism can usually be taken out and put back together with just four screws or bolts on the left and right sides of the sofa's bottom.
Replacing the correct model sleeper sofa mechanism is critical because even small differences in design, dimensions, or manufacturer can prevent a proper fit and compromise the safety, comfort, and durability of your sofa bed.
When it comes to sleeper sofas, the mechanism is the heart of the furniture. It’s what allows a couch to transform into a bed smoothly and securely. That’s why identifying and replacing your mechanism with the exact correct model is essential. According to SleeperMechanism.com’s FAQ, the first and most important step is to locate the manufacturer and model number of your current mechanism.
Here’s why this matters:
1. Precision Fit. Many sleeper sofa mechanisms look similar, but they are not interchangeable. Even slight variations in mounting width, depth, or frame shape can prevent installation or cause long-term issues. Using the correct model ensures the mechanism aligns perfectly with your sofa’s frame.
2. Safe and Reliable Operation. A mismatched mechanism can lead to instability, uneven weight distribution, or difficulty opening and closing the bed. By replacing with the correct model, you guarantee smooth pull-out action, secure locking, and guest safety.
3. Manufacturer-Specific Engineering Most sleeper sofa mechanisms are made by Leggett & Platt or Hickory Springs, not the sofa brand itself (Ashley, La-Z-Boy, Simmons, etc.). The model number sticker on the metal frame provides the only reliable way to match parts. Without it, you risk ordering a mechanism that won’t fit
4. Longevity and Durability. Hospitality and rental environments demand mechanisms that can withstand heavy, repeated use. Installing the correct model ensures your sofa bed performs as designed, extending its lifespan and reducing costly replacements.
5. Custom Projects Require Accuracy. For upholsterers, designers, or custom cabinetry projects, ordering the correct mechanism first allows you to verify measurements and spacing requirements before construction begins. This prevents expensive rework and ensures a professional finish.In short: replacing your sleeper sofa mechanism with the exact correct model is the only way to restore full functionality, protect your investment, and guarantee comfort for your guests. SleeperMechanism.com provides detailed guides, model identification tips, and expert support to help you get it right the first time.