LUX #9 Booklet Envelope 3 7/8' x 8 7/8' Bright Blue 250/Pack (WS-2038-250)

#9 Regular Envelopes (3 7/8 x 8 7/8) are commonly used as a reply envelope for invoice/business mailings, sent to recipients inside #10 Envelopes in order to mail something back to the sender. #9 Regular Envelopes (3 7/8 x 8 7/8) - Bright Blue 250/PK. Comes in Bright Blue, 24lb. Text Paper. #9 envelopes are the ideal size for 8 1/2' x 11' paper as... morewell as computer checks; #9 envelopes also fit inside of #10 envelopes, making them suitable for enclosure as a return envelope. Dimensions: 3 7/8'L x