Custom size
Mattress InsiderPark Meadow Encased Coil II
- Hybrid
- 8 in thick
- cushion-firm
Sleep Foundation: Best Mattress for Pressure Relief Read review
Made to 54 × 74 inGet a quote
Keystone Outback 18BHS mattress size
Main bed54 × 74 inRV full
That isn't a standard mattress size, so order a custom size cut to your platform.
About the RV full size →Keystone spec sheet, 2025.
Bunks26 × 74 in
Bunk. Keystone spec sheet, 2025.
Common RV bunk sizes →
Mattresses in 54 × 74 in
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Bunk mattresses in 26 × 74 in
Some bunks have a rounded corner, so trace yours before a custom cut. A thicker bunk mattress takes headroom from the bunk above.
Custom size
Mattress InsiderPark Meadow Encased Coil II
- Hybrid
- 8 in thick
- cushion-firm
Sleep Foundation: Best Mattress for Pressure Relief Read review
Made to 26 × 74 inGet a quote
The Outback bedroom. Measure the platform, not the old mattress, before you buy.
Bed sizes by year
| Year | Main bed | Bunks | Other beds | Source |
|---|---|---|---|---|
| 2024 | 54 × 74 in Full | 26 × 74 in | – | Keystone spec sheet |
| 2025 | 54 × 74 in Full | 26 × 74 in | – | Keystone spec sheet |
Years not listed weren't published.
The 18BHS floorplan
Keystone's 2025 18BHS floorplan.
Is this your 18BHS?
Check the year and length against your RV before you order.
| Year | Model | Length | Sleeps |
|---|---|---|---|
| 2024 | Outback OBX 18BHS | – | – |
| 2025 | Outback OBX 18BHS | 22' 1" | – |
Other Outback mattress sizes
Sources
- keystonerv-prod.zaneray.com: https://keystonerv-prod.zaneray.com/cms/media/43149e11-d2dd-454e-9b53-fd7339bc4ebb_KRV_2310_Outback_Brochure_8.5x11_WEB.pdf
- keystonerv-prod.zaneray.com: https://keystonerv-prod.zaneray.com/cms/media/Zxj6LoF3NbkBX6y2_OB_2410_Brochure_WEB.pdf
Questions
What size mattress is in the Keystone Outback 18BHS?
The main bed is 54 × 74 in (Keystone spec sheet, 2025).
What size are the Keystone Outback 18BHS bunk mattresses?
26 × 74 in (Keystone spec sheet, 2025).