200/pk ~ W-2 Tax Form ENVELOPES, Self-Seal, Double-Window — 9″x5-5/8″ — #9999-2 – DW4SS – #92580 – 4UPDWENVS05… Fits 4UP condensed format W-2 tax forms (a.k.a. 4-up quad/box/vertical style). SELF-SEALING envelopes – just fold, NO paper strip to discard and NO LICKING! … Compatible with QuickBooks Online and QuickBooks Desktop. … These envelopes fit 4UP condensed W-2 forms TF5209, 82668, 4UPPERF105, LW2BLANK4, etc. Please see photo with envelope dimensions for size verification.