We ordered the Airstream store's 600 thread count cotton twin bed sheets with fitted bottom sheet and waterproof mattress cover for new Classic model 30. We really liked the same sheets on our 25FB queen. The top sheet in both cases is a rectangle.
WBCCI Life Member 5123, AIR 70341, 4CU, WD9EMC
TV - 2012 Dodge 2500 4x4 Cummins HO, automatic, Centramatics, Kelderman level ride airbag suspension, bed shell
2014 31' Classic model 30 twin beds, 50 amp service, 900 watt solar system, Centramatics, Dill TPMS, disc brakes, 16" tires & wheels