Ask five RV owners what a "short queen" is and you'll get six answers. Manufacturers trim beds to fit slides, wheel wells and wardrobe walls — which is why the replacement market runs on exact measurements, not size names.
The common sizes, roughly
- RV Short Queen: about 60″ × 75″ (a standard queen is 80″ long).
- RV Short King: about 72″ × 75″–76″.
- Three-Quarter (48″ × 75″): common in older travel trailers.
- Bunks: anything — 28″ × 72″, 30″ × 76″, 35″ × 79″… this is where "standard" gives up entirely.
Treat the names as a starting point only. Two trailers of the same model and year routinely differ by half an inch after the bedding platform is installed.
Measure the platform, not the mattress
Old mattresses compress, shrink and sag. Measure the sleeping platform at its widest points, working to ±¼″, and note anything that clips the corner — wheel wells, nightstands, slide-out walls. Rounded corners solve most of those; the configurator takes a corner radius.
Thickness: what the bed is for
Main beds sleep best at 5–6″; bunks and dinette conversions at 3–4″; a factory mattress that's merely too firm is a 2–3″ topper job. Foam choice: HR45 for frequent travelers, memory-foam feel for pressure relief, natural latex for full-timers who want it to outlast the trailer.
Don't forget the doorway
The most common delivery complaint in the RV world isn't fit — it's a mattress that can't make the turn from door to bedroom. Measure the door, the hall and the bedroom aisle before you order. Our RV mattress page covers the full measuring checklist.
The takeaway
Ignore size names, measure the platform, mind the corners and the doorway. Odd numbers are our normal — the configurator prices any rectangle, rounded or trapezoid, to the quarter inch.