What our customers are saying...

Great quality, great prices, great service. Couldn't ask for anything more!

Dani, Surrey

I've been buying from Challenge for years and they've never let me down.

Roger, London

Really great service and an extremely helpful team on the phone. Highly recommended.

Nikki, Kent

Great to hear such passion and excitement about a cardboard box! Keep up the great work.

Olly, Guildford

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Letter Box Boxes - Royal Mail

Our postal boxes are easy-to-use and boast a self-locking feature. They are manufactured onsite, from tough, lightweight corrugated cardboard. They are made up of a minimum of 75% recycled material and are 100% recyclable.


Supplied flatpacked, you can store these boxes easily and safely. They are easy to make up, and we do have printed options available.


Product CodeDimensionsColourStylePack QtyPallet QtyQty
50+100+400+800+1,600+
ASCPIPA6K
178mm x 130mm x 22mm BrownLocking Tab5063000.130.120.100.090.08
ASCPIPC6
160mm x 110mm x 20mm WhiteNo Locking Tab5078000.170.150.140.120.10
ASCPIPA5K
239mm x 180mm x 22mm BrownLocking Tab5042000.170.150.140.120.10
ASCPIPC5
222mm x 160mm x 20mm WhiteNo Locking Tab5040000.230.210.180.160.14
ASCPIPA4K
322mm x 228mm x 22mm BrownLocking Tab5028000.260.230.210.180.16
ASCPIPC4
324mm x 230mm x 20mm WhiteNo Locking Tab5026000.360.320.290.250.22