White Thermal Labels 4×4″ (100×100 mm) for clear, square-format shipping and barcode printing. Direct thermal economy paper with hot-melt adhesive and a neat perforation between each label. Built for ecommerce brands, warehouses and busy despatch teams in the UK. Confirmed in real use with Zebra GK420 (d/t), Citizen CL-S and TSC DA/TE 4″ printers. No ink or toner required — load the roll and print.
Key Features
- Size: 4×4″ (100×100 mm) — square format for shipping, batching and product ID
- Direct Thermal Economy paper — print with heat, no ribbon needed
- Perforation between each label for quick, clean separation
- Hot-melt permanent adhesive — bonds to cardboard, films and plastics
- Sharp barcode/QR output with standard contrast settings
- Designed for short-term despatch and warehouse tasks
- Works with Zebra GK420, Citizen CL-S and TSC 4″ direct thermal printers
Specifications
| Label Size | 4×4″ (100×100 mm) |
| Material / Type | Direct Thermal Economy paper |
| Adhesive | Hot-melt, permanent |
| Perforation | Yes — between each label |
| Core Size | 1″ (25 mm) |
| Printer Compatibility | Zebra GK420 series, Citizen CL-S series, TSC DA/TE series |
| Typical Use | Shipping labels, product identification, box-end, shelf/bin labels |
| Packs | Single roll, 10-roll, bulk trade packs |
Printer Compatibility
Used day-to-day with:
- Zebra GK420d / GK420t
- Citizen CL-S series
- TSC DA210 / DA220 and TE series
Also suitable for other 4″ direct thermal printers that accept 100 mm-wide media.
Common Uses
- Square-format shipping labels (Royal Mail, DPD, Evri, UPS)
- Warehouse bin/shelf labels and box-end identification
- Product ID, batch/lot labels and colour-coded picking
- Returns handling and internal routing tickets
Why Choose These 4×4″ Labels
- Square label gives extra space for barcodes, logos or notes
- Load-and-print simplicity — no ink or toner
- Reliable hot-melt adhesive for busy packing benches
- Perforated for speed on high-volume packing lines
- Cost-effective economy stock for daily shipping
- UK stock and fast despatch for business continuity
Storage & Handling
- Store cool and dry, away from heat and direct sunlight
- Keep rolls sealed until use to avoid dust on edges
- Use within 12–18 months for best print quality
- Test adhesion on curved or low-energy plastics if critical
Helpful Links
- All Labels
- 4×6″ Labels
- 4×2″ Labels
- 3×2″ Labels
- Mailing Bags
- Cardboard Boxes
- Packaging Tape
- Integrated Labels
Label-size guidance: Avery UK shipping label size guide.
Trade & Bulk Orders
Supplying ecommerce brands, fulfilment centres and warehouses across the UK. Real-world tested in despatch environments.
- Bulk pricing tiers for 10+, 20+, 50+ rolls (mixed sizes welcome)
- UK warehouse stock for reliable repeat supply
- Same-day despatch before 5 pm Mon–Fri; next-day courier options
- Pallet shipping available for larger consignments
- Purchase Orders accepted (business customers)
- VAT invoices on every order; pro-forma on request
- Samples for print and adhesion tests
- Compatibility help for Zebra GK420, Citizen CL-S, TSC DA/TE and other 4″ printers
Quotes or samples: WhatsApp +44 7450 981838 or info@mrbags.co.uk.
Delivery & Service
UK stock held in our local warehouse. Orders placed before 5 pm Monday–Friday are despatched the same day.
- Royal Mail Tracked for reliable and fast delivery
- DPD Next Day for time-sensitive orders
- DPD Saturday Delivery available (paid upgrade)
- Tracking details provided automatically after despatch
- Secure packaging to protect rolls during transit
Please notify us in advance for urgent or weekend despatch so we can prioritise your order.
Customer Service & Support
Need help choosing the right size or placing a bulk order? Our team is here to assist you.
- Support – quotes and samples via WhatsApp: +44 7450 981838
- Email: info@mrbags.co.uk
- Click & Collect: 10A Locket Street, Manchester, M8 8EE
- Opening hours: Mon–Fri 10:00–19:00 | Sun 11:00–18:00
We reply quickly with clear, practical guidance.
| Material | Direct Thermal Paper |
| Size | 4x4 Inch (102x102 mm) |
| Color | White |
| Core Size | 1 Inch (25 mm) |
| Printer Compatibility | Citizen CL-S, TSC DA, Zebra GK420 |
| Type | Direct Thermal Economy |
Are these 4×4″ thermal labels compatible with Zebra printers?
Yes. These 4×4″ (100×100 mm) direct thermal labels work with most 4″ Zebra printers including GK420d and GK420t that accept roll-fed media.
Will they work in Citizen and TSC printers?
Yes. Commonly used in Citizen CL-S series and TSC DA/TE printers for 4″ direct thermal printing.
Do I need ink or toner to print these labels?
No. Direct thermal labels use heat to print, so no ink, ribbon or toner is required.
Are the labels perforated?
Yes. There is a perforation between each label for quick, clean tear-off.
What adhesive is used?
Hot-melt permanent adhesive that bonds well to cardboard, film and most plastics.
What is the size in millimetres and the core size?
Size is 4×4″ which is 100×100 mm. Core size is 1″ (25 mm), suitable for most desktop thermal printers.
What are these 4×4″ labels used for?
Square-format shipping labels, product ID, box-end and shelf/bin identification, batching and returns.
Are these labels waterproof or long-lasting?
They are intended for short-term applications in dry indoor conditions. Direct thermal paper may fade with moisture, heat or strong sunlight.
How should I store rolls for best results?
Store in a cool, dry place away from heat and sunlight. Keep rolls sealed until use to avoid dust on the edges.
Royal Mail 24 Tracked
Dispatched same day if ordered before 5 pm Monday to Friday. Please allow up to 1-2 days for delivery.
£1.99
DPD Next Day
Dispatched same day if ordered before 3 pm Monday to Thursday. Not available to Scottish Highlands & Islands.
£4.99
Free on orders over £100