If you’re a truck driver, you know that a good night’s sleep is everything. Finding the right mattress starts with knowing the exact dimensions. So, what size is a semi truck mattress? The standard size for a semi truck mattress is a 38-inch by 80-inch rectangle, though some variations exist.
This guide will walk you through everything you need to know about truck mattress sizes, how to choose the right one, and where to find the perfect fit for your sleeper cab.
What Size Is A Semi Truck Mattress
The most common and widely accepted size for a semi truck mattress is 38 inches wide by 80 inches long. This is often reffered to as a “truck size” or “custom RV size.” It’s designed to fit the specific contours of a semi-truck sleeper berth.
However, it’s crucial to measure your own sleeper before buying. Not all trucks are the same, especially across different makes, models, and years.
Common Semi Truck Mattress Size Variations
While 38″ x 80″ is the standard, you might encounter other sizes. Here’s a breakdown:
- 36″ x 79″ or 36″ x 80″: Found in some older Peterbilt, Kenworth, and Freightliner models.
- 42″ x 80″: A bit wider, common in some extended or high-roof sleepers for extra comfort.
- 35″ x 79″: A less common size, sometimes seen in specific International or Volvo trucks.
- 32″ x 79″: Typically found in day cab conversions or very compact sleepers.
Some custom sleepers, like those in certain long-haul configurations, can even approach a small residential double size (54″ x 75″). Always, always measure.
Why Truck Mattresses Are a Unique Size
Truck mattresses aren’t just small double beds. They are engineered for the unique environment of a semi-truck.
- Space Efficiency: Every inch in the sleeper cab counts. The mattress is cut to maximize sleeping area without wasting space.
- Cab Shape: The mattress often needs to fit around wheel wells, storage compartments, or curved walls.
- Weight Considerations: Lighter materials are sometimes prefered to keep the truck’s overall weight down.
- Durability: They must withstand constant vibration and movement from the road.
Step-by-Step: How to Measure Your Sleeper for a Mattress
Getting the wrong size is a costly mistake. Follow these steps to get it right the first time.
Step 1: Gather Your Tools
You’ll need a metal tape measure (cloth ones can stretch), a notepad, and a pen. Measure in inches for accuracy.
Step 2: Measure the Length
Measure from the very back of the sleeper berth (where the mattress touches the rear wall) to the front edge. Take this measurement in at least two places: along the left side, middle, and right side. Note the shortest measurement.
Step 3: Measure the Width
Measure from the driver’s side wall to the passenger side wall. Again, take measurements at the front, middle, and back of the space. Use the narrowest width.
Step 4: Note Any Obstructions
Look for anything that might affect the shape. This includes:
- Wheel well humps
- Protruding bolts or brackets
- Curved or angled walls
- Climate control ducts
If you have a significant obstruction, you may need a custom-cut mattress.
Step 5: Measure the Thickness (Depth)
Don’t forget this! Measure from the current mattress base (plywood or platform) up to the underside of any overhead cabinets or windows. A mattress that’s to thick can prevent cabinets from closing or make the space feel cramped.
Types of Semi Truck Mattresses
Once you know your size, you need to pick the material. Each has it’s pros and cons.
Memory Foam
Memory foam is a top choice for trucks. It contours to your body, reducing pressure points, and absorbs road vibration very well. Look for high-density foam for better durability. A potential downside is it can retain heat, so consider a gel-infused version.
Innerspring (Coil)
Traditional innerspring mattresses offer firm support and good airflow. However, they can be heavier and the continuous motion of the truck may cause coils to squeak or wear out faster than in a stationary home.
Latex Foam
Latex is responsive, cool, and naturally durable. It’s resistant to mold and dust mites, which is a plus for the truck environment. It is often one of the more expensive options.
Air Mattresses
Some truck-specific air beds allow you to adjust firmness on each side. They are great for couples with different preferences. Ensure you have a reliable 12V pump and a backup plan in case of a leak.
Hybrid Mattresses
Hybrids combine layers of foam with a pocketed coil base. They aim to give you the best of both worlds: contouring comfort and sturdy support with good breathability.
Where to Buy a Semi Truck Mattress
You have several options, each with different advantages.
- Truck Stop Stores: Places like TA/Petro or Love’s often carry mattresses. You can sometimes see them in person, but selection may be limited.
- Online Retailers: Amazon, Walmart, and eBay have many options. Read reviews carefully and check return policies, as shipping a mattress back can be a hassle.
- Specialty Manufacturers: Companies like Mattress Insider, Custom RV Mattresses, or Brooklyn Truck Mattresses specialize in custom sizes and often use high-quality materials. This is your best bet for a perfect non-standard fit.
- Local Mattress or Upholstery Shops: A local shop can sometimes cut a residential mattress to your exact truck dimensions, which can be a cost-effective solution.
Essential Accessories for Your Truck Mattress
Protecting your investment is key. Here’s what else you might need:
- Mattress Protector: A waterproof, breathable protector is non-negotiable. It shields against spills, stains, and moisture, extending your mattress’s life dramatically.
- Truck Bed Sheets: Standard home sheets won’t fit a 38″ x 80″ mattress. You need specifically sized fitted sheets. Many retailers sell sets with sheets and protector combos.
- Mattress Topper: If your mattress is a bit to firm, a 2-3 inch memory foam or latex topper can add comfort without needing a whole new mattress.
- Non-Slip Pad: A grippy pad between the mattress and the plywood base prevents the mattress from sliding during turns.
FAQs About Semi Truck Mattresses
Can I use a residential mattress in my truck?
Rarely. A standard twin mattress is 38″ x 75″, which is 5 inches shorter than a common truck mattress. A twin XL is 38″ x 80″, which matches the length but may still be the wrong shape if your sleeper has obstructions. It’s usually not a perfect solution.
How often should I replace my truck mattress?
Most truck mattresses should be replaced every 3-5 years with heavy use. Signs you need a new one include visible sagging, waking up with aches, or if the mattress no longer regains it’s shape.
Are truck mattresses more expensive than regular ones?
They can be, due to their custom nature. However, you can find quality options in a wide range of prices, from budget-friendly foam toppers to high-end custom latex cores. Shop around.
What’s the best thickness for a truck mattress?
6 to 8 inches is typical. Thicker isn’t always better—consider your cab height and base platform. A 10-inch mattress on a 6-inch platform might leave you sitting to close to the ceiling.
How do I get rid of my old truck mattress?
Some truck stops have dumpsters that accept them (check first). When you buy a new one from a specialty shipper, they might offer a removal service. You can also cut it up for disposal or repurpose the foam for other uses.
Can two people sleep comfortably on a truck mattress?
A standard 38″ width is cozy for two people. If you team drive regularly, consider looking for a wider model (42″ or more) or investing in a high-quality memory foam that minimizes motion transfer so you don’t feel your partner moving.
Maintenance Tips for a Longer Lasting Mattress
Taking care of your mattress makes a huge difference.
- Rotate It Regularly: Every 3-6 months, rotate the mattress 180 degrees (head to foot). This ensures even wear.
- Air It Out: When you’re home or during a long stop, strip the bed and let the mattress breathe in the sunlight if possible. This reduces moisture and odors.
- Clean Spills Immediately: Use a mild detergent and cold water. Never soak the mattress. The protector should handle most of this.
- Check the Base: Ensure the plywood or platform underneath is solid and flat. A sagging base will ruin any new mattress quickly.
Investing in the right mattress is investing in your health, safety, and job performance. By knowing the answer to “what size is a semi truck mattress” and taking the time to choose wisely, you’re setting yourself up for restful sleeps and productive drives. Remember, the road is demanding, but your bunk shouldn’t be.