Hi, this is a question that has been answered many many times, you just have to do a search for Jumbo size and 228 size respectively, or as Beautylicious has recommended, look at the reissue and classic flap sticky at the top of the forum, you should be able to find all reissues sizes there, and under the reference library, check out the thread on POST PICS OF YOUR FLAP, CLASSIC FLAP AND REISSUE, you should be able to find Classic flaps sizes....
one thing to note, I think the sizes of previous 228 and the S/S2008 228 are slightly different, so if you are looking to buy one, make sure you know which one you are looking at....