- Hybrid
- 13.25 in thick
- Soft / Medium / Firm
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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 →KZ spec sheet, 2019.
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Some bunks have a rounded corner, so trace yours before a custom cut. A thicker bunk mattress takes headroom from the bunk above.

The Venom bedroom. Measure the platform, not the old mattress, before you buy.
| Year | Main bed | Bunks | Other beds | Source |
|---|---|---|---|---|
| 2017 | – | 40 × 96 in | – | KZ spec sheet |
| 2018 | – | 40 × 96 in | – | KZ spec sheet |
| 2019 | 72 × 80 in King | 40 × 96 in | – | KZ spec sheet |
Years not listed weren't published.

KZ's 2019 V4114TK floorplan.
Check the year and length against your RV before you order.
| Year | Model | Length | Sleeps |
|---|---|---|---|
| 2017 | Venom V4114TK | 43' 4" | – |
| 2018 | Venom V4114TK | 43' 4" | – |
| 2019 | Venom V4114TK | 43' 4" | – |
The main bed is 72 × 80 in (KZ spec sheet, 2019).
40 × 96 in (KZ spec sheet, 2019).