Best 4-inch printers for 100×150 mm shipping labels

Shipping labels sized 100×150 mm require a 4-inch label printer. In this article we compare popular models on speed, reliability, management and total cost of ownership (TCO).

Zebra ZD421D (desktop)

Daily volume: up to ~600 labels/day
Strengths: reliability, broad driver & software support
Choose when: growing webshops and warehouses with multiple workstations

Zebra ZD621D (premium desktop)

Daily volume: up to ~1,000 labels/day
Strengths: higher speed, display and admin features
Choose when: uptime and manageability matter most

Honeywell PC42d (budget desktop)

Daily volume: up to ~400 labels/day
Strengths: low purchase price, simple operation
Choose when: cost-conscious start or backup printer

Brother (alternative)

Daily volume: light to medium
Strengths: simple software, office environments
Note: pick 4-inch models only if 100×150 mm is your main format

Volume-based choice

Use case	Recommendation
Up to 300 labels/day	Honeywell PC42d or Zebra ZD421D
300–1,000 labels/day	Zebra ZD421D or ZD621D
1,000+ labels/day	Consider industrial ZT series

Common mistakes

Choosing too narrow: 2–3″ won’t fit 100×150 mm.
USB-only with multiple users: pick LAN or Wi-Fi to avoid queues.
Only looking at purchase price: include TCO (labels, downtime, lifespan).

Not sure? Share your daily volume and required integration, and we’ll recommend the right model.