Custom size
- Memory foam
- 8 in thick
- not stated
Made to 60 × 78 inGet a quote
That isn't a standard mattress size, so order a custom size cut to your platform.
Heartland spec sheet, 2010.
We may earn a commission when you buy through some of these links. It doesn't change which mattresses we list.
Some bunks have a rounded corner, so trace yours before a custom cut. A thicker bunk mattress takes headroom from the bunk above.

The Sundance bedroom. Measure the platform, not the old mattress, before you buy.

Heartland's 2010 3300RCB floorplan.
Check the year and length against your RV before you order.
| Year | Model | Length | Sleeps |
|---|---|---|---|
| 2010 | Sundance 3300RCB | 35'-9" | – |
The main bed is 60 × 78 in (Heartland spec sheet, 2010).
30 × 72 in (Heartland spec sheet, 2010).