Envelope specifications on the SendPro MailCenter

Envelope dimensions

Minimum

• 3.5 in. x 5 in.postcard size

Maximum

• SendPro MailCenter 1000 and SendPro MailCenter 2000: 13 in. x 14 in.
• SendPro® MailCenter 3000: 15 in. x 15 in.

Envelope thickness

Minimum

• SendPro MailCenter 1000 and SendPro MailCenter 2000: 0.18 in.
• SendPro MailCenter 3000: 0.09 in.

Maximum

• SendPro MailCenter 1000 and SendPro MailCenter 2000: 0.62 in.
• SendPro MailCenter 3000: 0.75 in.

Envelope flap depth for sealing

Minimum

• 1 in.

Maximum

• SendPro MailCenter 1000 and SendPro MailCenter 2000: 3 in.
• SendPro MailCenter 3000: 3-7/8 in.

Envelope flap angles for sealing

• For envelopes with a flap length from 1 to 2.36 inches, the minimum flap angle is 18 degrees.
• For envelopes with a flap length greater than 2.36 inches to the maximum flap length for the particular model, the minimum flap angle is 21 degrees.

Acceptable envelope materials

Material type and finish must be matte and may include (if available in your market):

• White Wove
• Kraft/Brown Kraft
• Manila
• Envelopes made of recycled paper
• Self-seal envelopes
• Tri-fold tabbed (2 tabs minimum) inserts, 20-28 lb
• Cranes Crest