What sizes does a double size windows come in?
Where are the two windows located?

• We offer over 50 styles of double windows envelopes with regular gum or self seal gum:

MEASURING THE WINDOW

How do I measure the window position of an envelope?

3 step process:

1. Start by measuring FROM THE LEFT side of the envelope to where you want the window to start, Example, 1" from the left.
2. Measure FROM THE BOTTOM of the envelope to where you want the window to start, Example, 1/2" from the bottom.
3. Measure the size of the window by height x width, example, 1-1/8" x 4-1/2" is the window size.

If my window envelope has 2 windows, how do I measure?

• Take the top window and follow the measurements above steps - (following the rules of measuring "From the Left" and "From the Bottom".)
  

• Take the bottom window - do the same as above.
• 
  

Why are some envelopes referred to as numbers, like a #10, or 6-3/4?

Those are terms used within the envelope industry and are common sizes. Use our simple envelope chart above to see the common industry sizes and what the dimensions are for each size.

What is a standard window?

A standard window has three factors:
          1) the size of the window is 1-1/8” x 4-1/2”.
          2) the position of the window is located 7/8” from the left, and ½” from the bottom
          3) the material of the window which is known as a polystyrene film, or more commonly known as poly.

What is a horizontal window?

A horizontal window is one in which is longest length of the window is parallel with the flap.
What is a vertical window?

A vertical window is one in which the longest length of the window is perpendicular with the flap opening and is parallel with the left or right side of the envelope.

What is Jet Printing?

Jet printing is a term used in the industry for printing on converted envelopes. The envelopes are stacked into a hopper and run through and printed at high speeds.

What is a PMS color?

A PMS color is known as a reference color on a color chart called pantone matching system. The correct trade name is Pantone colors.

What is color process printing?

The process of printing from a series of two or more halftone plates to produce a variety of colors and shades on an envelope.



Click to read our helpful articles:

Double Window Envelopes for Business

Why Envelopes are an Important Element of Business Stationary