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Envelope Organizer 3D Models: STL Files for Desk and Wall

This collection gathers 3D models for keeping envelopes, letters and bills in order: desk trays, wall holders, multi-slot sorters and card racks. Most of them are simple shapes that print without much fuss on a home 3D printer. It is useful if you want a holder sized around the envelopes you actually receive rather than a generic tray. Polyzon does not confirm whether models are free, their price, license, official status, affiliation, safety or fitness. Check the current terms at the source.

Le texte de cette collection est rédigé en anglais ; la recherche, elle, fonctionne dans toutes les langues.

Une collection Polyzon · 46 modèles sur 4 plateformes

Comment cette collection est composée

Polyzon compose cette collection à partir des résultats de recherche des plateformes connectées. Les doublons et les modèles sans aperçu sont retirés, les correspondances faibles sont placées à la fin, et le reste suit l’ordre de la recherche. Les modèles appartiennent à leurs auteurs : consultez les conditions sur la page de chaque modèle.

Règles de sélection : la rédaction de Polyzon · Texte mis à jour le 15/10/2026

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«Envelope Organizer 3D Models: STL Files for Desk and Wall»

The models split roughly into two groups. Flat trays and caddies sit on a desk and often combine an envelope slot with a pen cup or a second compartment, while wall holders hang from a screw or adhesive strip and take up no desk space. Sorters add several vertical slots so envelopes can be separated by type or by day, and a few designs are shaped around postcards, A6 mailers or gift envelopes instead of standard letter mail.

Before printing, read the author's page for the slot dimensions and compare them with the envelopes you use, since a tray built around a #10 or A4 envelope will not hold a thick stack of the same size. Check how many separate parts the model has and whether they join with glue, screws or a snap fit, and whether the overhangs need supports. The material and settings the author lists matter for thin walls and tall vertical dividers, and photos of real prints show how the slots and joints come out.

If the results feel narrow, try related wording: mail sorter, letter rack, bill organizer, paper tray, document tray, desk caddy or card holder. Adding a placement word such as desk, wall, countertop or entryway narrows things further, and combining it with a size or format term helps when you need a specific slot. Browsing the office and home categories nearby often turns up trays that were not labeled as envelope organizers.

FAQ

Questions fréquentes

What envelope sizes do these organizers usually take?
Designs are commonly built around standard formats such as #10, A4, A6 or 8.5x11 inch envelopes, and some are sized for postcards or gift envelopes. The slot width and depth on the author's page tell you what will actually fit.
Do envelope organizers need supports when printed?
Flat trays with sloped or rounded sides often print without them, while wall holders with mounting tabs, deep dividers or bridging over slots may need supports. Check the author's notes and the orientation shown in the photos.
Which material works for a desk or wall holder?
PLA is common for desk pieces that stay indoors, while PETG is often chosen for thin walls and parts that flex or hang. The author's listed material and layer height are the safest starting point.
How do I find more models like these?
Search for related terms such as mail sorter, letter rack, bill organizer or paper tray, and add a placement word like desk, wall or entryway. Related categories such as office, home and kitchen also contain trays that work for envelopes.
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