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 × 80 inGet a quote
Thor Chateau 21Z mattress size
Main bed54 × 80 inCustom size
That isn't a standard mattress size, so order a custom size cut to your platform.
Thor spec sheet, 2026.
Bunks52 × 96 in
Bunk. Thor spec sheet, 2026.
Common RV bunk sizes →
Mattresses in 54 × 80 in
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Bunk mattresses in 52 × 96 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 52 × 96 inGet a quote
Bed sizes by year
| Year | Main bed | Bunks | Other beds | Source |
|---|---|---|---|---|
| 2025 | 54 × 80 in Full | 52 × 96 in | – | Thor spec sheet |
| 2026 | 54 × 80 in Full | 52 × 96 in | – | Thor spec sheet |
Years not listed weren't published.
The 21Z floorplan
Thor's 2027 21Z floorplan.
Is this your 21Z?
Check the year and length against your RV before you order.
| Year | Model | Length | Sleeps |
|---|---|---|---|
| 2025 | Chateau 21Z | – | – |
| 2026 | Chateau 21Z | – | – |
| 2027 | Chateau 21Z | 24'-1" | 4 |
Other Chateau mattress sizes
Sources
- Thor (media-center.thormotorcoach.com): https://media-center.thormotorcoach.com/m/62ff783963f0d0a/original/Z64ACZbqstJ9-lID_2025-TS-Chateau-021225-pdf.pdf
- Thor (media-center.thormotorcoach.com): https://media-center.thormotorcoach.com/m/5fe233a092843e7e/original/aM1v_p5xUNkB06YG_2026-OH-Chateau-pdf.pdf
- Thor (thormotorcoach.com): https://www.thormotorcoach.com/chateau/floor-plans/21z
Questions
What size mattress is in the Thor Chateau 21Z?
The main bed is 54 × 80 in (Thor spec sheet, 2026).
What size are the Thor Chateau 21Z bunk mattresses?
52 × 96 in (Thor spec sheet, 2026).