Check the listing for details. GRAINGER APPROVED 36DZ07 Mailer Envelopes,LDPE,Self Sealing,PK50 36DZ07. Condition: New. Listed at 39.16 USD. Mailer Envelopes, Material Poly, Mailer Type Bubble, Closure Style Self Sealing, Color White, Usable WxL 14 in x 19 in, Usable Width 14 in, Usable Length 19 in, Outside WxL 14 1/4 in x 20 in, Outside Width 14 1/4 in, Outside Length 20 in, Mailer Number #7, Bubble Size 3/16 in, Material Thickness 0.245 in, With Tear Strip No, Pre-Printed Address Lines No, Package Quantity 50 Poly bubble mailers resist tearing and protect the contents from moisture and water. A self-sealing closure secures the contents in the envelope for shipment. The bubble liner protects items from damage during shipment.Bubble mailers have a plastic bubble liner to provide some cushioning and padding around items. These mailing envelopes protect the contents of the package and help prevent breakage during shipment. A clo.