#9 Window Envelope

#9 Window Envelope Printing – Custom #9 Window Envelopes

Our custom printed #9 window envelopes are made from high-quality #24 white wove paper and feature a convenient address window for mailing invoices, statements, checks, correspondence and other business documents. These smaller business envelopes are commonly used as reply or return envelopes inside #10 mailing envelopes. Available with black or full-color printing, they provide a professional and convenient way to handle return mail without handwriting addresses or applying separate address labels.

Custom printed #9 window envelopes can include your company logo, return address, contact information or other artwork, helping eliminate the time and expense of handwriting addresses or applying rubber stamps. The address window allows the mailing address printed on the enclosed document to show through the envelope, making these envelopes particularly useful for return mail, payments, invoices, statements and recurring business correspondence. Optional safety tint is available for added privacy when mailing checks and other sensitive documents.

Key Benefits of #9 Window Envelopes

Standard #9 business envelope size
Convenient address window
Fits inside a #10 envelope
Custom black or full-color printing
#24 white wove paper
Optional interior safety tint
Standard gummed flap
Ideal for return mail, payments and business correspondence
Excellent for invoices, statements and direct mail
Helps eliminate handwriting and separate address labels
Packed up to 500 envelopes per box

File Requirements and Specifications:

File Type: PDF (contact us for assistance with other file types).
Envelope Size/Design File Size: 8.875" x 3.875" (landscape).
Window Position: 0.875" from the left, 0.5" from the bottom.
Window Size: 4.5" wide, 1.125" tall.
Margin: 1/2" recommended (1/4" minimum).
Bleed: If you require ink bleed, contact us for a custom quote.
Crop Marks: Not required.
Paper: #24 white wove with or without tint.
Flap: Industry standard moistenable gummed flap.
Ink: Black or Full Color (CMYK).
Color Space: Grayscale, RGB or CMYK (recommended for color).
File Resolution: 300 dpi (dots per inch) recommended for optimum quality, 1200 dpi recommended for vector artwork.
2 Sided Printing: Optional in black or color ink.
Free File Check: All files are pre-flighted for technical errors before printing.
Proofs: Free PDF proof via email.
Graphic Design Services: Optional, additional charges apply and are billed separately.
Production Time: Typically 24–48 business hours from proof approval for most orders.
Packed: Up to 500 envelopes per box; 2500 envelopes per case (5 boxes).
Shipping: Nationwide via UPS Ground, 2nd Day Air, Next Day Air Saver or Next Day Air.

Free #9 Window Envelope Layout Templates

#9 window envelope template

About #9 Window Envelope Printing

Our #9 window envelopes are pre-die cut, folded and glued before printing. The envelopes are printed on high-speed printing presses in either black or full-color CMYK ink. The convenient address window allows the mailing address printed on the enclosed document to show through the envelope, making these envelopes particularly useful for return mail, payments, invoices, statements and recurring business correspondence.

The #9 envelope is commonly used as an enclosed return envelope inside a #10 mailing envelope, allowing customers to conveniently return payments, forms and other documents. The standard gummed flap provides a secure seal, while the window eliminates the need for separate address labels or handwritten addresses.

Envelopes are packaged in boxes of up to 500, with up to five boxes per carton.