Large Format Envelopes 6″ x 9″ Envelopes 6″ x 9″ Envelopes 9″ x 12″ Envelopes 9″ x 12″ Envelopes 10″ x 13″ Envelopes 10″ x 13″ Envelopes 7.5″ x 12.5″ Envelopes 7.5″ x 12.5″ Envelopes 17″ x 22″ Envelopes 17″ x 22″ Envelopes 11.5″ x 14.5″ Envelopes 11.5″ x 14.5″ Envelopes 10″ x 15″ Envelopes 10″ x 15″ Envelopes 12″ x 16″ Envelopes 12″ x 16″ Envelopes 15″ x 18″ Envelopes 15″ x 18″ Envelopes 9.5″ x 4.75″ Envelopes 9.5″ x 4.75″ Envelopes