Choosing the wrong size bunkie board is the most common mistake buyers make. This guide shows you exactly how to measure and which size to order — in under a minute.
Always measure your mattress size, not your bed frame. Frame dimensions vary between manufacturers, but mattress sizes are standardised. A queen mattress is always 60″ × 80″ — order the queen bunkie board and you're done.
Don't measure your bed frame's inner dimensions. Two queen frames from different brands can vary by up to 2 inches. Measure the mattress instead — it's standardised.
| Size | Dimensions (W × L) | Best For |
|---|---|---|
| Twin | 38″ × 75″ | Single beds, bunk beds, children's beds, daybeds |
| Twin XL | 38″ × 79″ | College dorms, taller sleepers, adjustable frames |
| Full / Double | 54″ × 75″ | Full-size beds, guest rooms |
| Full XL | 54″ × 80″ | Full XL frames, slightly longer full beds |
| Queen | 60″ × 80″ | Standard queen beds — most popular size |
| King | 76″ × 80″ | King beds |
If you don't have a tape measure handy, check the tag on the side of your mattress — most manufacturers print the size right on the label.
If your mattress falls between standard sizes, always round up. A slightly larger bunkie board won't cause any problems — but one that's too small won't provide even support across the whole surface, which defeats the purpose.
Pull-out sleeper sofas are trickier because the mattress folds and the frame is compact. For sleeper sofas, our heavy-duty boards in 58″×48″ and 58″×58″ are designed to cover the critical centre support area rather than the full mattress length. Measure the fold-out sleeping area and compare.
All sizes available on Amazon with fast Prime delivery. Select your size on the product page and the correct ASIN is loaded automatically.
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