Custom Envelope Manufacturer

Custom Envelope Guide



Custom Envelope Guide

Buying and specifying custom envelopes is easy when you know the language.

Basic Parts of an Envelope


Specifying Window Placement:

Window Placement Graphic

Location of the Window

Regardless of any printing on your envelope, hold the envelope so the flap is at the top. In this position, measure the window from the left and from the bottom.

Direction of the Window

The direction of the window is determined by which dimension is written first. For example, if the window is horizontal, the size should be written as 1" x 4” (figures A and C). If the window is vertical, the size should be written as 4" x 1” (figures B and D). If you are unsure about the placement or measurement of a window, consult your Priority Envelope sales or customer service representative.


Standard Envelope Terminology

Seam Style

Diag = Diagonal DSS = Double Side Seam
CS = Center Seam
SS = Single Seam
OSSS = Open Side Double Side Seam *used for open side and booklets
OSDS = Open Side Diagonal Seam
OECS = Open End Center Seam *used for open end & catalog
OESS = Open End Side Seam

Envelope Style

Comm = Commercial
OS = Open Side (booklet)
OE = Open End (catalog)
Remit = Remittance
BT = Bangtail
Baro = Baronial
Slv = Sleeve
Coin = Coin
Policy = Policy
Drive Up = Drive Up

Flap Style

Wal = Wallet
Crv = Curve
Remit = Remittance
Comm = Commercial
Pnt = Pointed
Sqr = Square
Rnd = Round
Spcl = Special
Bank = Bankers

Other Terminology

WDO = Window
WW = White Wove
BK = Brown Kraft
BIT = Blue Inside Tint
KIT= Black Inside Tint
SWC = Special Window Charge
BRE = Business Reply Envelope
CRE = Courtesy Reply Envelope
PMS = Pantone Color Matching System *formulated mixed inks
FCGDB = First Class Green Diamond Border
FCM = First Class Mailer