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Gusseted Stayflats Plus - Expand-a-Mailer
Expandable Fiberboard mailing envelopes
  • You can ship more in our expandable StayFlats envelopes because they expand up to 1".
  • Expand-A-Mailer made from plain white lightweight .020-point recycled board.
  • Expandable fiberboard mailers feature a Self-sealing flap for quick and easy closing.
  • Also featured is a pull tab tear strip for easy opening of the mailer.
Expandable Mailers
Unit of Measure
Items Expandable Mailers
ZZ-CAL-1G
10 Inch (in) Length Expandable Mailer 		Expandable Mailers
ZZ-CAL-2G
12-1/2 Inch (in) Length Expandable Mailer 		Expandable Mailers
ZZ-CAL-3G
15 Inch (in) Length Expandable Mailer 		Expandable Mailers
ZZ-CAL-4G
17 Inch (in) Length Expandable Mailer
Description N/A Gusseted Stayflats Plus - Expand-a-Mailer
Expandable Fiberboard mailing envelopes
  • You can ship more in our expandable StayFlats envelopes because they expand up to 1".
  • Expand-A-Mailer made from plain white lightweight .020-point recycled board.
  • Expandable fiberboard mailers feature a Self-sealing flap for quick and easy closing.
  • Also featured is a pull tab tear strip for easy opening of the mailer.
Brands N/A Stayflats®
Color N/A White
Weight N/A 15 lb N/A 22 lb N/A 29 lb N/A 43 lb
Quantity Per Unit N/A CS (100)
Length N/A 10 in N/A 12-1/2 in N/A 15 in N/A 17 in
Width N/A 7-3/4 in N/A 9-1/2 in N/A 12-1/2 in N/A 14 in
Height N/A 1 in
Maximum Expand Capacity N/A Up to 1 in
Additional Information N/A
  • Gusseted Stayflats® mailers require no taping, stapling or heat-sealing to close.
  • Call for details about custom printing.
  • 100% Recyclable, with 35% Post-Consumer Content