42L PolyBox (20kg Deep)
Large insulated box for bulk deliveries of chilled or frozen goods. Ideal for foodservice, catering or high-volume distribution.
Quick Specifications
External Dimensions
600 mm400 mm290 mm
Temperature Ranges
Chilled, frozen, ambient & hot
Max Payload Weight
20kg
Chilled Duration
72h+ (depending ice pack usage)
Dimensions & Capacity
Weights & Payload
Temperature Control
Materials & Construction
Standards & Compliance
Why Choose JB Packaging?
Reliable packaging performance
Consistent, dependable packaging solutions designed to protect products and support a strong customer experience.
Protects product integrity
High-quality materials and practical packaging design help your products arrive safely and in excellent condition.
Built for repeat use
Reusable and efficient packaging options can support smoother operations and better long-term value.
Operational efficiency
Thoughtful packaging choices help streamline packing workflows and support faster, more efficient fulfilment.
Testimonials
Tina M.
"Excellent Service"
Excellent service very easy to order online and very quick delivery well.packed and great quality product highly recommend
Caroline D.
"Super Fast Delivery"
This is the perfect size for holding 12 1lb honey jars (full of delicious honey)! I am still able to safely lift the boxes when full. I am a beekeeper and need to protect bottled honey from changes in ambient temperature.These boxes were the most competitive on price and the service was excellent, with super fast delivery. Thank you.
Andrew.W
"Excellent Boxes"
This are excellent boxes and a good price. The delivery and administration is also very good.
Trusted standards behind our insulated packaging
Recognised Standards
JB Packaging works to recognised quality and environmental standards, including ISO 9001 and ISO 14001 where applicable.
Industry Credentials
We are connected to recognised organisations including BPF, Make UK, Arpro and Living Wage, reinforcing a commitment to good practice.
Built for Cold-Chain Use
Our insulated packaging solutions are designed to support reliable temperature-controlled handling, storage and delivery for commercial use.