Custom size
- Hybrid
- 8 in thick
- cushion-firm
Sleep Foundation: Best Mattress for Pressure Relief Read review
Made to 36 × 74 inGet a quote
Some bunks have a rounded corner, so trace yours before a custom cut. A thicker bunk mattress takes headroom from the bunk above.
Sleep Foundation: Best Mattress for Pressure Relief Read review
| Year | Main bed | Bunks | Other beds | Source |
|---|---|---|---|---|
| 2013 | – | 28 × 74 in, 38 × 74 in | – | Keystone spec sheet |
| 2017 | – | 36 × 74 in | – | Keystone spec sheet |
Years not listed weren't published.

Keystone's 2017 316BIK floorplan.
Check the year and length against your RV before you order.
| Year | Model | Length | Sleeps |
|---|---|---|---|
| 2013 | Sprinter 316BIK | 35' 8" | – |
| 2014 | Sprinter Wide Body 316BIK | 35' 8" | – |
| 2015 | Sprinter Wide Body 316BIK | 36' 8" | – |
| 2016 | Sprinter Wide Body 316BIK | 36' 8" | – |
| 2017 | Sprinter Wide Body 316BIK | 36' 8" | – |
36 × 74 in (Keystone spec sheet, 2017).