

The real blank at this size, folded by the same engine as the studio. The artwork is a sample from a fictional brand — swap in your own in the editor.
#10 window envelope dieline
241.3 × 104.775 mm business envelope with an editable address opening. Check the folded letter and address position before printing; film and insert are supplied separately. A ready-sized preset of the board envelope — change the length, width and height and every panel, tuck and glue flap is redrawn to match.

Sign in to download. Dieline downloads are part of Pro: PDF, Illustrator, SVG and DXF, cut, crease and bleed on separate layers, without a watermark. See plans
- Reference
- —
- Structure
- Board envelope
- Inside size
- Width 241.3 · Height 104.8 mm
- Size range
- Width 90–400 · Height 60–350 mm
- Manufacturing
- 241.3 × 104.8 mm score to score · inside vs outside sizes
- Parts
- One blank
- Board area
- 0.058 m² · about 8 up on a 720 × 1020 mm sheet
- Default board
- Art paper 170 g · 0.16 mm caliper
- Board options
- SBS 300SBS 350Kraft 350GD2 350FBB 400Black 350Paper 170F-fluteSBS 18 pt
- Good for
The flat dieline
Exactly what the downloads contain, drawn from the template at its default size, with a 3 mm bleed. How to read a dieline.
- Crease
- Cut
- Glue area
- Bleed 3 mm

How it folds
The #10 window envelope erects in 3 steps, in the order the creases are scored to take. The editor plays the same sequence in 3D and lights each step’s creases on the dieline.
- 1Fold the glue flap and glue the seamSide seal and 1 more
- 2Fold the walls upBack
- 3Close the end flapsClosing flap
How the blank is sized
Score-to-score panel sizes at the default size, with the formula each one follows. L, W and H are the inside dimensions; T is the board caliper (0.16 mm for Art paper 170 g). Change the size or board in the editor and every panel is recalculated.
| Panel | Size (mm) | Formula |
|---|---|---|
| Front | 241.3 × 104.8 | L × H |
| Back | 241.3 × 103.8 | L × H − 1 |
| Side seal ×2 | 12 × 101.8 | – |
| Closing flap | 241.3 × 29.3 | L × – |
Adjustable in the editor
Beyond the size and board, this structure exposes 14 options; the template and 3D preview follow each change.
- Flap shape3 options
- Flap depthmm
- Peel & seal stripon / off
- Side seal widthmm
- Retained slit lockon / off
- Address windowon / off
- Window widthmm
- Window heightmm
- Window from leftmm
- Window from bottommm
- Window corner radiusmm
- Thumb notchon / off
- Tear stripon / off
- Fastener3 options
The board envelope family
The same structure with sizes, boards and options set for a use.

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Before you choose this template
Size, materials, downloads and production checks.
Will the #10 window envelope dieline fit my product?
241.3 × 104.775 mm business envelope with an editable address opening. Check the folded letter and address position before printing; film and insert are supplied separately. The default dimensions in inside-size mode are Width 241.3 mm, Height 104.8 mm. Measure your product and any inserts or wrapping, then set the template size. Check a physical sample with your contents before ordering production.
Can I change the size and design?
Yes. The supported ranges are Width 90–400 mm, Height 60–350 mm. At the default settings, the editor also exposes Flap shape, Flap depth, Peel & seal strip, Side seal width, Retained slit lock, Address window and 8 more options. Add your own artwork and preview the result in 3D. The template geometry is rebuilt when its dimensions change.
Which materials can I choose?
The default is Art paper 170 g (0.16 mm caliper). This structure allows SBS white board 300 g, SBS white board 350 g, Kraft board 350 g, Grey-back duplex 350 g, Folding boxboard 400 g, Black-core board 350 g, Art paper 170 g, F-flute micro corrugated, SBS white board 18 pt. Select the stock before checking fit, and ask your converter to confirm the grade and caliper for the intended product.
Which files can I download?
The template page offers dimensioned PDF, Illustrator (.ai via script), layered SVG and DXF cutting and crease geometry. After adding artwork in the editor, you can export a print-ready PDF and review the bleed, safe areas and dieline layers with your printer.
Is this dieline free?
Browsing the previews is free, and you can customize the template after signing in with Google. Template and print-file downloads require a Pro or Business plan. The Free plan allows one eligible download every 8 hours; free mockups, renders and videos carry a watermark. See the pricing page for the current plans.
Can I send the download straight to production?
Use the file as a starting point for a printer or converter review. Confirm the finished dimensions, stock, crease and cutting setup, assembly, bleed and artwork, then approve a physical sample. The 3D preview does not test strength, transit performance or suitability for particular contents.
Similar structures
Other structures built in a similar way, matched on code family, category, closures and proportions.
Make this #10 window envelope yours
Open it in the editor to set your size, drop artwork on each face, check bleed and safe areas, and export print-ready PDF with the dieline on its own layer — or stage it in a 3D scene for a mockup.





