Our pre-printed 6 x 9 Booklet Envelopes are white envelopes designed for mailing tax return documents. This envelope is preprinted with the statements "Income Tax Return" and "Retain For A Period Of At Least 5 Years" on the front of the envelope. Constructed from durable 24lb. White paper stock and easily sealed by a Moistenable Glue strip located on the inside of the back flap. If you're looking for the perfect Envelopes, the 6 x 9 Tax Return Booklet Envelopes are the perfect choice and an amazing value. Click the yellow "Add to Cart" button now!