Great all around
RVMattress.comSignature Hybrid
- Hybrid
- 13.25 in thick
- Soft / Medium / Firm
Sleep Foundation: Best Mattress Overall Read review
$1,865RV King - 72x80 · list priceSee price
Newmar Ventana 4340 mattress size
Main bed72 × 80 inRV king
That's an RV king, 4 in narrower than a regular king (76 × 80 in). A regular king won't fit, so get an RV king in exactly 72 × 80 in.
About the RV king size →Newmar spec sheet, 2027.
Bunks30 × 73 in
Bunk. Newmar spec sheet, 2027.
Common RV bunk sizes →
Mattresses in 72 × 80 in
We may earn a commission when you buy through some of these links. It doesn't change which mattresses we list.
Best value
RVMattress.comCopperFlex Essential
- All-foam
- 6 in thick
- five comfort options
$799RV King - 72x80 · list priceSee price
Firm
RVMattress.comPlank Firm
- All-foam
- 10 in thick
- Firm / Extra Firm
Mattress Clarity: Best RV Mattress for Heavy People Read review
$1,532RV King - 72x80 · list priceSee price
Cooling
RVMattress.comAurora Luxe Cooling
- Hybrid
- 13.25 in thick
- Soft / Medium / Firm
Sleep Foundation: Best Mattress for Temperature Regulation Read review
$2,465RV King - 72x80 · list priceSee price
Heavy duty
RVMattress.comTitan Plus Luxe
- Hybrid
- 13 in thick
- Plush
$1,865RV King - 72x80 · list priceSee price
Helix pick
HelixHelix Midnight
- Hybrid
- 11.5 in thick
- Medium Feel
Sleep Foundation: Best Mattress for Side Sleepers Read review
$1,489RV King · list priceSee price
RV hybrid
RVMattress.comCopperFlex RV Hybrid
- Hybrid
- 10 in thick
- Medium-Firm
$1,065RV King 72x80 · list priceSee price
Custom size
Mattress InsiderLuxury Gel Memory Foam
- Memory foam
- 8 in thick
- not stated
Made to 72 × 80 inGet a quote
Bunk mattresses in 30 × 73 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 InsiderLuxury Gel Memory Foam
- Memory foam
- 8 in thick
- not stated
Made to 30 × 73 inGet a quote
The Ventana bedroom. Measure the platform, not the old mattress, before you buy.
Bed sizes by year
| Year | Main bed | Bunks | Other beds | Source |
|---|---|---|---|---|
| 2026 | 72 × 80 in King | 30 × 73 in | – | Newmar 2026 brochure |
| 2026 | 72 × 80 in King | 30 × 73 in | – | Newmar spec sheet |
| 2027 | 72 × 80 in King | 30 × 73 in | – | Newmar spec sheet |
Years not listed weren't published.
The 4340 floorplan
Newmar's 2027 4340 floorplan.
Is this your 4340?
Check the year and length against your RV before you order.
| Year | Model | Length | Sleeps |
|---|---|---|---|
| 2025 | Ventana 4340 | – | – |
| 2026 | Ventana 4340 | 43' 10" | 7 |
| 2027 | Ventana 4340 | 43' 10" | 6 |
Other Ventana mattress sizes
Sources
- Newmar (newmarcorp.com): https://www.newmarcorp.com/content/dam/newmar/page-assets/model-page-assets/2025-model-year-page-assets/venta/10-brochure__vt25/2025-ventana-brochure-final3-combo.pdf
- Newmar (newmarcorp.com): https://www.newmarcorp.com/content/dam/newmar/brochure/2026-newmar-digital-brochures/2026-ventana-brochure-final-combo.pdf
- Newmar (newmarcorp.com): https://www.newmarcorp.com/models/ventana/2026-ventana/floor-plans/4340
- Newmar (newmarcorp.com): https://www.newmarcorp.com/content/dam/newmar/page-assets/dealer-resources/brochures/2027/MY27VT_DigiBrochure_FNL.pdf
- Newmar (newmarcorp.com): https://www.newmarcorp.com/models/ventana/2027-ventana/floor-plans/4340
Questions
What size mattress is in the Newmar Ventana 4340?
The main bed is 72 × 80 in (Newmar spec sheet, 2027).
What size are the Newmar Ventana 4340 bunk mattresses?
30 × 73 in (Newmar spec sheet, 2027).