If you don't know what style sheet to order perhaps this will help. The Universal style cots have tubular shaped legs. The Spaceline cots (made by Angeles Rest but they also make a Universal style so be careful!) have a very bulky triangular shaped legs. The Community Playthings cots are wider than all the others - about 25 inches wide. And, finally, the metal leg cots certainly vary and I have made different style sheets for them over the years - make what the customer wants..
A picture is worth a thousand words - hope they help but if you still aren't sure, just give me a call at 303 842 4314 or email me at email@example.com. You can always send me a picture and the length of the cot and I can probably tell you what you should order.