Do you have to use snow peak mantles? or...
Do you have to use snow peak mantles? or can you use coleman if so what style /size?
Yes u can use coleman, "slip on #51 mantles" from your local walmart!
Walmart doesn't seem to be stocking the Coleman #51s at their stores anymore (just #21 and #95...and I tried 3 different stores), nor does anyone else that I can find. If you do happen to find them, stock up right then and there, or plan to have to buy them online or by special order.
You can get "51s" from the Coleman outlet stores in Tennessee.