STAYFLATS Mailer Envelopes: 17 in x 21 in, 17 in x 21 in, 0.028 in Material Thick

STAYFLATS Stayflat Tab-Locking Chipboard Mailers protect flat items during shipping. They are ideal for documents, photos, artwork, or thin parts that must remain unbent. The tab-locking closure secures contents without tape or adhesive, making them suitable for industrial packaging, warehousing, and logistics applications.

These mailers measure 17 in x 21 in with a 0.028 in material thickness. They are white, sold in packs of 100, and do not include a tear strip. The manufacturer part number is RM7W. They are designed for secure, flat shipment of documents and lightweight industrial components.

3G Electric supplies STAYFLATS Stayflat Tab-Locking Chipboard Mailers to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. As a global industrial solutions provider, we source and deliver genuine products across 14 departments — and far more — ensuring you get the right packaging for your needs.

Select a mailer size that allows your item to lie flat with at least 0.5 in of border on all sides. For a 17 in x 21 in mailer, the maximum item size is approximately 16 in x 20 in. Ensure the material thickness (0.028 in) provides adequate rigidity for your item's weight and fragility.