Great all around
RVMattress.comSignature Hybrid
- Hybrid
- 13.25 in thick
- Soft / Medium / Firm
Sleep Foundation: Best Mattress Overall Read review
$1,865RV King - 70x80 · list priceSee price
KZ Venom 3815RG mattress size
Main bed70 × 80 inRV king
That's an RV king, 6 in narrower than a regular king (76 × 80 in). A regular king won't fit, so get an RV king in exactly 70 × 80 in.
About the RV king size →KZ spec sheet, 2023.
Bunks60 × 84 in / 40 × 96 in
Bunk. KZ spec sheet, 2024.
Common RV bunk sizes →
Mattresses in 70 × 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 - 70x80 · list priceSee price
Firm
RVMattress.comPlank Firm Luxe
- Hybrid
- 13 in thick
- Firm / Extra Firm
$1,865RV King - 70x80 · 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 - 70x80 · list priceSee price
RV hybrid
RVMattress.comCopperFlex RV Hybrid
- Hybrid
- 10 in thick
- Medium-Firm
$1,065RV King - 70x80 · list priceSee price
Custom size
Mattress InsiderLuxury Gel Memory Foam
- Memory foam
- 8 in thick
- not stated
Made to 70 × 80 inGet a quote
Bunk mattresses in 60 × 84 in / 40 × 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 InsiderLuxury Gel Memory Foam
- Memory foam
- 8 in thick
- not stated
Made to 60 × 84 inGet a quote
The Venom bedroom. Measure the platform, not the old mattress, before you buy.
Bed sizes by year
| Year | Main bed | Bunks | Other beds | Source |
|---|---|---|---|---|
| 2023 | 70 × 80 in King | 60 × 84 in, 40 × 96 in | – | KZ spec sheet |
| 2024 | – | 60 × 84 in, 40 × 96 in | – | KZ spec sheet |
Years not listed weren't published.
The 3815RG floorplan
KZ's 2024 3815RG floorplan.
Is this your 3815RG?
Check the year and length against your RV before you order.
| Year | Model | Length | Sleeps |
|---|---|---|---|
| 2023 | Robby Gordon Speed UTV Venom 3815RG | 42' 10" | – |
| 2024 | Robby Gordon Speed UTV Venom 3815RG | 42' 10" | – |
Other Venom mattress sizes
Sources
Questions
What size mattress is in the KZ Venom 3815RG?
The main bed is 70 × 80 in (KZ spec sheet, 2023).
What size are the KZ Venom 3815RG bunk mattresses?
60 × 84 in / 40 × 96 in (KZ spec sheet, 2024).