Amazon's Choice for 72 x 80 sheets. RV King Sheets Luxury Soft 100% Egyptian Cotton - Sheet Set for RV King 72x80 Mattress Taupe Solid 600 Thread Count Deep Pocket. Browse through our wide selection of brands, like The Twillery Co. and Nestl Bedding. If you aren’t finding the perfect product in the results for your current search for rv king sheets 72x80, you can try searching again or using the Department navigation on the top of the page. These sheets just barely fit our 72 x 80 mattress (sleep number) in our RV. I would not recommend them due to the poor quality of the sheets. Read more. Helpful. California King sheets are made for a mattress with the dimensions of 72 inches wide and 84 inches long. Whereas the Eastern or Standard King size bed sheets fit mattresses with the dimensions of 76 inches wide and 80 inches long. Cot Size, Hide A Bed Sheets 39" x 72" & Full Size Rollaway Sheets 48" x 72" Twin XL Sheets. Fitted Sheet Sets & Fitted Only Options. Regular or Deep Pocket. Twin XXL Sheets. Fitted Sheet Style For Your 38" x 84" Extra, Extra Long Bed. Full XL Sheets Designed To Fit And Stay On. Deep Pocket Full XL Now Available. 54 x 80.