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). While 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. Standard/Plus models handle 30–80 envelopes/batch, Premium handles up to 350, and Premium Ultra handles up to 700 per batch.
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, but paper weight capacity depends on the model:
• iAuto Standard / Advanced: Designed for standard media, supporting paper weight under 250 GSM.
• iAuto Plus / Premium / Premium Ultra: Supports thick cardstock up to 350 GSM and textured specialty paper. The Premium Ultra features a heavy-duty 60kg frame and 8 motors built for stack heights up to 120mm.
• iAuto Standard / Advanced: Designed for standard media, supporting paper weight under 250 GSM.
• iAuto Plus / Premium / Premium Ultra: Supports thick cardstock up to 350 GSM and textured specialty paper. The Premium Ultra features a heavy-duty 60kg frame and 8 motors built for stack heights up to 120mm.
6. How can I use my custom personal handwriting or font files with iAuto?
iAuto supports single-stroke SVG fonts or custom .gfont font files created via UUNA TEK's Free Font Creator. Users can digitize their personal natural handwriting into single-stroke vector paths for authentic, human-like writing output.
7. How does iAuto perform bulk variable address printing from spreadsheet data?
iAuto executes batch mail-merge address printing by importing Excel spreadsheet files (.xlsx / .xls). The software maps recipient data fields to your template to render unique handwritten names and addresses sequentially during automated feeding.
8. What vector design software and protocol options work with iAuto machines?
iAuto works with official dedicated software and standard vector workflows:
• Software & Control: iAuto must be operated using official proprietary software.
• Design Integration: You can design in Adobe Illustrator or other vector tools and export as SVG files to upload into iAuto software.
• Developer Access: Provides Python APIs for automated custom workflows and system integration (standard G-code senders are not supported).
• Software & Control: iAuto must be operated using official proprietary software.
• Design Integration: You can design in Adobe Illustrator or other vector tools and export as SVG files to upload into iAuto software.
• Developer Access: Provides Python APIs for automated custom workflows and system integration (standard G-code senders are not supported).
9. Does iAuto support continuous multi-page or bulk envelope batch feeding?
Yes, automated batch feeding is a standard feature across all models. Feed capacities vary by series:
• iAuto Standard / Advanced: Up to 80 letters / 30 envelopes per batch.
• iAuto Plus: Up to 210 letters / 80 envelopes per batch.
• iAuto Premium: Up to 1,200 letters / 350 envelopes per batch.
• iAuto Premium Ultra: Up to 2,400 letters / 700 envelopes per session with automatic pen-switching for continuous production.
• iAuto Standard / Advanced: Up to 80 letters / 30 envelopes per batch.
• iAuto Plus: Up to 210 letters / 80 envelopes per batch.
• iAuto Premium: Up to 1,200 letters / 350 envelopes per batch.
• iAuto Premium Ultra: Up to 2,400 letters / 700 envelopes per session with automatic pen-switching for continuous 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 initial setup, pen pressure calibration, and API/workflow integration.