HSA, Archer MSA, or Medicare Advantage MSA Information Use Form 5498-SA Copy B to print and mail payment information to the participant. 5498-SA Forms are 3up on an 8 1/2 x 11" sheet with a 1/2" side perforation and are printed on 20# laser paper. Order the quantity equal to the number of participants for which you file. Mail to participants in compatible window envelopes. 99DWENV05 - Moisture Seal Double Window 99DWENVS05 - Self Seal Double Window 99SWENV05 - Moisture Seal Single Window