Stayflats Plus® Self Seal Kraft Mailers .0) 200 – 6″ x 6″ Stayflats Plus Kraft Mailers $49.99 Add to Cart .01) 100 – 6″ x 8″ Stayflats Plus Kraft Mailers $33.69 Add to Cart .02) 200 – 6″ x 8″ Stayflats Plus Kraft Mailers $66.19 Add to Cart .03) 100 – 7″ x 9″ Stayflats Plus Kraft Mailers $37.44 Add to Cart .03) 200 – 7″ x 9″ Stayflats Plus Kraft Mailers $73.69 Add to Cart .04) 100 – 9″ x 11.5″ Stayflats Plus Kraft Mailers $47.44 Add to Cart .04) 200 – 9″ x 11.5″ Stayflats Plus Kraft Mailers $93.69 Add to Cart .05) 100 – 9.75″ x 12.25″ Stayflats Plus Kraft Mailers $52.44 Add to Cart .05) 200 – 9.75″ x 12.25″ Stayflats Plus Kraft Mailers $103.69 Add to Cart 100 – 11″ x 13.5″ Stayflats Plus Kraft Mailers $62.44 Add to Cart 100 – 12.75″ x 15″ Stayflats Plus Kraft Mailers $69.94 Add to Cart 100 – 13″ x 18″ Stayflats Plus Kraft Mailers $78.69 Add to Cart 100 – 17″ x 21″ Stayflats Plus Kraft Mailers $118.69 Add to Cart 100 – 18″ x 24″ Stayflats Plus Kraft Mailers $361.19 Add to Cart 100 – 20″ x 27″ Stayflats Plus Kraft Mailers $411.19 Add to Cart 200 – 11″ x 13.5″ Stayflats Plus Kraft Mailers $124.94 Add to Cart