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Home > Envelopes, Inserter Friendly > Reverse Flap Window Envelopes
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Reverse flap, inverted flap, or bottom flap.  Whatever you call them
we've got 'em!  A reverse flap envelope is often required when the mail
to address that shows through the window is on the bottom of the
document that is to be inserted.  Until recently, reverse flap envelopes
had to be custom produced for each application.  We now stock three
sizes and our standard window locations work for over 95% of
applications.
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#9 1/2 Reverse Flap Double Window Security Envelope - 5,000 qty #10 Reverse Flap Double Window Security Envelope - 5,000 qty
Our Price: $263.00
Our Price: $277.00
#9 1/2 Reverse Flap Double Window Security Envelope - 5,000 qty #10 Reverse Flap Double Window Security Envelope - 5,000 qty
This is our most popular double window envelope - ideal for checks.  It
is a hybrid size called a
# 9 1/2 which is the width of a #10, but the height of a #9 envelope.  
The greater width is designed for trouble free inserting while the
lesser height reduces wiggle room and therefore, reduces show through of
confidential information on checks.
This #10 double window is our #1 selling envelope overall, even though it is an inverted flap.  It is a true #10 size.  The ENV-10 has a proven track record in installations where an inverted flap is required.
#10 Reverse Flap Single Window Security Envelope - 7,500 qty #10 Reverse Flap Double Window Security Envelope - 10,000 qty
Our Price: $405.00
Our Price: $485.00
#10 Reverse Flap Single Window Security Envelope - 7,500 qty #10 Reverse Flap Double Window Security Envelope - 10,000 qty
This is our single window style for customers that prefer a pre-printed return address. (Custom printed envelopes are delivered quickly and at a great price. Call for quote)
This #10 double window is our #1 selling envelope overall, even though it is an inverted flap.  It is a true #10 size.  The ENV-10 has a proven track record in installations where an inverted flap is required.
#9 1/2 Reverse Flap Double Window Security Envelope - 10,000 qty #10 Reverse Flap Single Window Security Envelope - 10,000 qty
Our Price: $487.00
Our Price: $500.00
#9 1/2 Reverse Flap Double Window Security Envelope - 10,000 qty #10 Reverse Flap Single Window Security Envelope - 10,000 qty
This is our most popular double window envelope - ideal for checks.  It
is a hybrid size called a
# 9 1/2 which is the width of a #10, but the height of a #9 envelope.  
The greater width is designed for trouble free inserting while the
lesser height reduces wiggle room and therefore, reduces show through of
confidential information on checks.
This is our single window style for customers that prefer a pre-printed return address. (Custom printed envelopes are delivered quickly and at a great price. Call for quote)
#10 Reverse Flap Single Window Security Envelope - 25,000 qty #10 Reverse Flap Double Window Security Envelope - 25,000 qty
Our Price: $978.00
Our Price: $1,125.00
#10 Reverse Flap Single Window Security Envelope - 25,000 qty #10 Reverse Flap Double Window Security Envelope - 25,000 qty
This is our single window style for customers that prefer a pre-printed return address.  (Custom printed envelopes are delivered quickly and at a great price.  Call for quote) This #10 double window is our #1 selling envelope overall, even though it is an inverted flap.  It is a true #10 size.  The ENV-10 has a proven track record in installations where an inverted flap is required.
#9 1/2 Reverse Flap Double Window Security Envelope - 25,000 qty #10 Reverse Flap Single Window Security Envelope - 50,000 qty
Our Price: $1,130.00
Our Price: $1,797.00
#9 1/2 Reverse Flap Double Window Security Envelope - 25,000 qty #10 Reverse Flap Single Window Security Envelope - 50,000 qty
This is our most popular double window envelope - ideal for checks.  It is a hybrid size called a # 9 1/2 which is the width of a #10, but the height of a #9 envelope.  The greater width is designed for trouble free inserting while the lesser height reduces wiggle room and therefore, reduces show through of confidential information on checks. This is our single window style for customers that prefer a pre-printed
return address.  (Custom printed envelopes are delivered quickly and at a
great price.  Call for quote)
#9 1/2 Reverse Flap Double Window Security Envelope - 50,000 qty #10 Reverse Flap Double Window Security Envelope - 50,000 qty
Our Price: $1,995.00
Our Price: $2,067.00
#9 1/2 Reverse Flap Double Window Security Envelope - 50,000 qty #10 Reverse Flap Double Window Security Envelope - 50,000 qty
This is our most popular double window envelope - ideal for checks.  It is a hybrid size called a # 9 1/2 which is the width of a #10, but the height of a #9 envelope.  The greater width is designed for trouble free inserting while the lesser height reduces wiggle room and therefore, reduces show through of confidential information on checks. This #10 double window is our #1 selling envelope overall, even though it is an inverted flap.  It is a true #10 size.  The ENV-10 has a proven track record in installations where an inverted flap is required.