Custom size
Mattress InsiderLuxury Gel Memory Foam
- Memory foam
- 8 in thick
- not stated
Made to 72 × 78 inGet a quote
Highland Ridge Open Range 287RLS mattress size
Main bed72 × 78 inCustom size
That isn't a standard mattress size, so order a custom size cut to your platform.
Highland Ridge spec page, 2026.
Mattresses in 72 × 78 in
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The Open Range bedroom. Measure the platform, not the old mattress, before you buy.
Bed sizes by year
| Year | Main bed | Bunks | Other beds | Source |
|---|---|---|---|---|
| 2025 | 72 × 78 in King | – | – | Highland Ridge spec page |
| 2026 | 72 × 78 in King | – | – | Highland Ridge spec page |
Years not listed weren't published.
The 287RLS floorplan
Highland Ridge's 2026 287RLS floorplan.
Is this your 287RLS?
Check the year and length against your RV before you order.
| Year | Model | Length | Sleeps |
|---|---|---|---|
| 2025 | Open Range 3X 287RLS | 35' 4" | 4 |
| 2026 | Open Range 3X 287RLS | 34' 7" | 4 |
Other Open Range mattress sizes
Sources
- Highland Ridge (highlandridgerv.com): https://www.highlandridgerv.com/rvs/fifth-wheels/2025-open-range-3X/287rls/
- Highland Ridge (highlandridgerv.com): https://www.highlandridgerv.com/rvs/fifth-wheels/2026-open-range-3x/287rls/
Questions
What size mattress is in the Highland Ridge Open Range 287RLS?
The main bed is 72 × 78 in (Highland Ridge spec page, 2026).