Estimate coolant mass
Use payload weight, box size, route duration, and ambient season before the first lane test.
DTC meat boxes may ship chilled steaks, frozen cuts, sausages, or mixed boxes. The packout decision should start with product state: chilled meat needs gel packs or PCM with leak control; frozen meat usually needs dry ice planning and carrier checks.
The coolant amounts below are starting ranges for planning. Final packout should be validated with the exact order mix, shipper size, carrier lane, and season.
| Route condition | Temperature intent | Tempk packaging setup | Coolant planning range | Coolant position |
|---|---|---|---|---|
| Chilled premium meat, 8-24 h | 0-4 C chilled arrival | EPP or insulated carton, leak liner, absorbent base, separated gel packs or 0 C PCM. | 1.0-2.0 kg gel packs or PCM for 2-6 kg payload. | Side and top coolant separated from trays or vacuum packs. |
| Overnight chilled meat, 24-36 h | 0-4 C with low warm dwell | Thicker insulation, double leak control, logger in product air space, reduced headspace. | 2.0-3.8 kg gel packs or PCM for 2-6 kg payload. | Perimeter coolant with divider; prevent tray pressure and purge leakage. |
| Frozen DTC meat, 24-48 h | -18 C route intent | Frozen shipper, dry ice chamber, vapor gap, label and carrier limit review. | Use dry ice calculator; often 3.0-7.0 kg for 2-6 kg payload depending on box and lane. | Keep dry ice separated from retail packs and follow carrier marking requirements. |
Use the Ice Pack Calculator for chilled routes. For frozen boxes, compare with the Dry Ice Calculator before testing.
A good subscription box should hold temperature and still arrive clean, readable, separated, and easy for the customer to unpack.
The customer's expected receiving state decides gel pack, PCM, or dry ice logic.
Use a leak liner and absorbent layer so meat purge does not wet the carton or other items.
Separate hard frozen gel packs or dry ice from retail packs to avoid surface damage and pressure marks.
Record temperature, purge, odor, tray or vacuum condition, coolant remaining, and outer carton dryness.
Use these checks when adjusting coolant quantity, liner structure, insulation thickness, or fulfillment timing.

Use the product page for handling logic, then size the first trial with tools and validate the real parcel route.
Use payload weight, box size, route duration, and ambient season before the first lane test.
Compare conditioned gel packs, 0 C PCM, and dry ice where frozen delivery is required.
Review fulfillment dwell, pickup delay, last-mile exposure, and receiving window before launch.
Share the product mix, payload weight, box size, fulfillment dwell time, route duration, season, and receiving standard. Tempk can help choose insulation, coolant mass, liner structure, and validation checks.