Built for Mack Sleeper Cabs
Mack Semi Truck Mattresses
The Mack Anthem's 70″ stand-up sleeper takes a full 42x80 mattress — the same size as most modern wide-cab sleepers. Every SleeperKing model — Classic, Serenity and Premium — is available in this size, ships free, and comes with a 120-night guarantee.
Shop Mack Mattresses1,000 comfort coils available · Made in the USA · Free shipping
Semi Truck Mattress Sizes for Mack Models
The Mack Anthem's 70″ stand-up sleeper takes the widest of the three standard semi truck mattress sizes.
| Model | Sleeper Type | Mattress Size | Max Thickness |
|---|---|---|---|
| Mack Anthem | 70″ stand-up sleeper | 42x80 | 8″ – 12″ |
Driving a Mack Pinnacle or Mack Granite?
These sleepers are typically narrower than the Anthem's stand-up berth and don't line up with a standard SleeperKing size out of the box. Measure your bare bunk pan first — our 39x80 is usually the closest standard fit, or request a custom size built to your exact dimensions.
How to Measure Your Mack Sleeper
- Remove the old mattress and measure the bare bunk pan, not the mattress currently sitting on it — compressed foam and worn springs will throw off your numbers.
- Measure width and length at the narrowest points. Subtract about one inch from each so the new mattress drops in without bulging at the edges.
- Check headroom around any overhead storage or bunk curtain track in the Anthem's stand-up sleeper.
- Note the configuration. Anthem, Pinnacle and Granite sleepers differ enough that the model name alone isn't a reliable size — measure before ordering.
Which SleeperKing Model Fits Your Mack
Classic
Firm support, budget-friendly, 850 coils. The straightforward replacement for a worn-out factory mattress in an Anthem stand-up sleeper.
Serenity Best Seller
Max comfort with copper-infused lumbar support, 1,000 coils. The most common pick among Mack owner-operators running long OTR miles.
Premium
Dual-sided, flippable, 1,000 coils with cool/warm sides. Built for drivers who run hot or want the option to flip the mattress as it wears.
Shop Mack Semi Truck Mattresses
Mack Mattress Questions
What size mattress fits a Mack Anthem?
A 42x80 semi truck mattress — 42 inches wide by 80 inches long — fits the Anthem's 70" stand-up sleeper. That's the widest of the three standard semi truck mattress sizes.
What size mattress fits a Mack Pinnacle or Granite?
These sleepers typically run narrower than the Anthem and don't match a standard SleeperKing size out of the box. Measure your bunk pan — 39x80 is usually the closest standard fit, or request a custom size built to your exact dimensions.
How thick can a Mack sleeper mattress be?
8" to 12", depending on the SleeperKing model and any headroom constraints in your sleeper.
Is there a guarantee on Mack-fit mattresses?
Yes — the same 120-night guarantee that applies to every SleeperKing mattress, standard size or custom.
