iAuto Series: Size Compatibility & Product Selection Guide
Quick Recommendation Summary
UUNA TEK® iAuto Series Selection Rule: All models (iAuto Standard, Advanced, Plus, Premium, Premium Ultra) support standard media sizes including US Letter, A4, #10/DL envelopes, and A7/A2 cards. For oversized formats such as US Legal contracts (8.5" × 14"), flat catalog mailers (9" × 12", 10" × 13", C4), diplomas, and large event signage, choose the A3 series models: iAuto Standard, Advanced, Plus.
| Dimensions (Inches / mm) |
Document / Item Type | Typical Applications & Key Industries | iAuto (A3 Series) |
iAuto Premium (A4 Series) |
Recommended Model |
|---|---|---|---|---|---|
| 8.5" × 11" (216 × 279 mm) | US Letter | North American business letters, real estate, legal, and financial prospect mailers | ✓ Supported | ✓ Supported | All models: iAuto Standard, Advanced, Plus, Premium, Premium Ultra |
| 5.5" × 8.5" (140 × 216 mm) | US Half Letter / Statement | Small business pitch notes, brand thank-you letters, luxury stationery | ✓ Supported | ✓ Supported | All models: iAuto Standard, Advanced, Plus, Premium, Premium Ultra |
| 8.27" × 11.69" (210 × 297 mm) | A4 Paper | European & international standard business letters | ✓ Supported | ✓ Supported | All models: iAuto Standard, Advanced, Plus, Premium, Premium Ultra |
| 5.83" × 8.27" (148 × 210 mm) | A5 Paper | Package inserts, handwritten brand notes, marketing booklets | ✓ Supported | ✓ Supported | All models: iAuto Standard, Advanced, Plus, Premium, Premium Ultra |
| 5.25" × 7.25" (133 × 184 mm) | A7 Envelope | Most popular envelope size for wedding invitations & gala invites | ✓ Supported | ✓ Supported | All models: iAuto Standard, Advanced, Plus, Premium, Premium Ultra |
| 4.375" × 5.75" (111 × 146 mm) | A2 Envelope | Standard RSVP return envelopes & holiday greeting envelopes | ✓ Supported | ✓ Supported | All models: iAuto Standard, Advanced, Plus, Premium, Premium Ultra |
| 4.33" × 8.66" (110 × 220 mm) | DL Envelope | Standard European commercial envelope (holds tri-folded A4 sheets) | ✓ Supported | ✓ Supported | All models: iAuto Standard, Advanced, Plus, Premium, Premium Ultra |
| 162 × 229 mm | C5 Envelope | Common European envelope (holds A5 or half-folded A4 paper) | ✓ Supported | ✓ Supported | All models: iAuto Standard, Advanced, Plus, Premium, Premium Ultra |
| 5" × 7" (127 × 178 mm) | 5" × 7" Card (A7 Card) | Standard wedding invitations & luxury gala invites | ✓ Supported | ✓ Supported | All models: iAuto Standard, Advanced, Plus, Premium, Premium Ultra |
| 4.25" × 5.5" (108 × 140 mm) | 4.25" × 5.5" Card (A2 Card) | Everyday thank-you notes, RSVP cards, and e-commerce package inserts | ✓ Supported | ✓ Supported | All models: iAuto Standard, Advanced, Plus, Premium, Premium Ultra |
| 4" × 6" (102 × 152 mm) | 4" × 6" Postcard | Standard promotional postcards & real estate marketing cards | ✓ Supported | ✓ Supported | All models: iAuto Standard, Advanced, Plus, Premium, Premium Ultra |
| 11.69" × 16.54" (297 × 420 mm) | A3 Paper | Fine art prints, hand-signed artwork, calligraphic art, large-format planning sheets | ✓ Supported | ✗ Not Supported | iAuto Standard, Advanced, Plus |
| 11" × 17" (279 × 432 mm) | US Tabloid / Ledger | Financial spreadsheets, architectural drafts, engineering blueprints | ✓ Supported | ✗ Not Supported | iAuto Standard, Advanced, Plus |
| 9.84" × 13.90" (250 × 353 mm) | B4 (ISO) | Official documents, brochure originals, exam sheets, design drafts | ✓ Supported | ✗ Not Supported | iAuto Standard, Advanced, Plus |
| 8.5" × 14" (216 × 356 mm) | US Legal | North American real estate contracts, legal agreements, closing documents | ✓ Supported | ✗ Not Supported | iAuto Standard, Advanced, Plus |
| 9.0" × 12.8" (229 × 324 mm) | C4 Envelope | European flat envelopes (holds unfolded A4 contracts, certificates, art paper) | ✓ Supported | ✗ Not Supported | iAuto Standard, Advanced, Plus |
| 9.0" × 12.0" (229 × 305 mm) | 9" × 12" Catalog Envelope | North American flat envelopes (holds unfolded US Letter documents & booklets) | ✓ Supported | ✗ Not Supported | iAuto Standard, Advanced, Plus |
| 10.0" × 13.0" (254 × 330 mm) | 10" × 13" Catalog Envelope | Large North American mailers (holds multi-page thick files, folders & agreements) | ✓ Supported | ✗ Not Supported | iAuto Standard, Advanced, Plus |
| 9" × 12" / 11" × 14" | Certificates & Diplomas | Custom handwriting on high school/university diplomas & achievement awards | ✓ Supported | ✗ Not Supported | iAuto Standard, Advanced, Plus |
| Up to 11" × 17" / A3 | Seating Charts & Signage | Wedding & gala entrance seating charts, place cards, large event signage | ✓ Supported | ✗ Not Supported | iAuto Standard, Advanced, Plus |
| 8.5" × 14" / 11" × 17" | Large Menu | Large-format handwritten specialty menus for upscale restaurants & hotels | ✓ Supported | ✗ Not Supported | iAuto Standard, Advanced, Plus |
Choosing the Right Model for Your Workflow
Option 1: iAuto Premium Series (Up to A4 Capacity)
Best For: E-commerce brands, invitation studios, and direct mail marketing teams.
- Standard Letters: US Letter (8.5" × 11"), A4, #10 Envelopes, and DL Envelopes.
- Cards & Invites: A7 Envelopes (5.25" × 7.25") with 5" × 7" Cards; A2 Envelopes with 4.25" × 5.5" Cards.
- Advantage: Compact, cost-effective, and covers 90%+ of standard handwritten marketing needs.
Option 2: iAuto Standard/Advanced / Plus Series (Up to A3 Capacity)
Best For: Real estate agents, law firms, educational institutions, and event planners.
- US Legal Paper (8.5" × 14"): Essential for real estate agreements and legal closing documents.
- Flat Catalog Mailers: C4, 9" × 12", and 10" × 13" envelopes for unfolded multi-page files.
- Large Format Media: High school/university diplomas, 11" × 17" seating charts, and menus.
Frequently Asked Questions (FAQ)
1. Can the iAuto Premium Series write on North American US Letter (8.5" × 11") paper?
Yes, the iAuto Premium Series fully supports US Letter paper (8.5" × 11" / 216 × 279 mm). Although categorized as A4-class, the automatic feeding tray is designed with extra width tolerance to process standard North American letter-size paper smoothly.
2. Which iAuto model is recommended for #10 commercial envelopes and A7 wedding envelopes?
The iAuto Premium Series is the most recommended model for #10 and A7 envelopes. Both #10 commercial envelopes (4.125" × 9.5") and A7 invitation envelopes (5.25" × 7.25") fit comfortably within the A4 feeding tray parameters.
3. Why is the iAuto A3 Series required for real estate direct mail marketing?
The iAuto A3 Series is required because real estate workflows rely on US Legal paper (8.5" × 14") and flat catalog envelopes (9" × 12" / 10" × 13"). These formats exceed the length and width capacities of standard A4 machines.
4. What pens, markers, or ink types are compatible with UUNA TEK iAuto machines?
iAuto machines feature an adjustable universal pen holder that accommodates ballpoint pens, gel pens, fountain pens, metallic markers, and fine-liners up to 15mm in diameter. Users can freely use standard off-the-shelf writing instruments without proprietary pen restrictions.
5. Can iAuto automated writing machines handle thick cardstock or textured paper?
Yes, iAuto machines can feed and write on thick cardstock up to 350 GSM and textured specialty paper. The feeder pressure and pen elevation height are fully adjustable to maintain smooth paper flow and optimal pen pressure.
6. How can I use my custom personal handwriting or font files with iAuto?
iAuto supports TrueType (.ttf), OpenType (.otf), and single-stroke SVG fonts created from personal handwriting. Users can convert their natural handwriting into digital vector stroke paths for 100% authentic human-like handwriting output.
7. How does iAuto perform bulk variable address printing from spreadsheet data?
iAuto executes batch mail-merge address printing by importing CSV or Excel datasets. The software automatically maps recipient fields (Name, Address, Custom Message) to render unique handwritten envelopes sequentially during continuous feeding.
8. What vector design software and protocol options work with iAuto machines?
iAuto connects seamlessly with Inkscape (via UUNA TEK extensions), Adobe Illustrator (via SVG export), standard G-code sender applications, and Python APIs for automated custom workflows.
9. Does iAuto support continuous multi-page or bulk envelope batch feeding?
Yes, all iAuto models feature an integrated automatic feeder holding up to 100–150 sheets or envelopes. This enables unattended batch writing and continuous high-volume production.
10. What warranty and technical support coverage comes with iAuto machines?
Every iAuto machine includes a 1-year comprehensive hardware warranty, lifetime software and firmware updates, and direct technical support for integration and hardware calibration.