Roll of 450 Labels 4x6 Direct Thermal Shipping Labels for Zebra 2844 ZP-450 ZP-500 ZP-505 (4 Rolls) Direct thermal labels Compatible with Zebra / Eltron printer, 450/Roll, 1" Core Strong adhesive to corrugated boxes and envelopes With premium raw material offered by Avery Corporation, our label is waterproof, durable and printing clearly Minimum application temperature: 10; Service temperature range: 15 ~ +65