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Description

At SR Mailing, we understand the importance of reliable and secure packaging to ensure the safe delivery of your products. Our crash lock boxes provide a dependable, efficient and professional packaging solution for businesses that need strong protection with fast assembly. Made from 100% recycled kraft paper, these boxes are designed to deliver both sustainability and performance. The clever crash lock base allows the box to pop into shape instantly, removing the need for excessive tape and speeding up packing times in busy fulfilment environments. Once assembled, the base forms a secure and sturdy seal that keeps your products safe during stacking, storage and transit.

Crash lock boxes are ideal for eCommerce businesses that want packaging that looks clean, operates smoothly and holds up under pressure. Their durable construction ensures excellent impact resistance, so items stay protected even when shipments are handled multiple times along the delivery chain. For a quick-to-use, eco-friendly and highly reliable packaging choice, crash lock boxes offer everything your business needs. 

Material Composition:  100% Recycled Kraft Paper
Recommended Storage Temperature 13-21°C (55.4°F – 69.8°F) for optimum performance.
Recyclable? Yes (With glue strip removed)
Biodegradable? Yes
Compostable? Yes
GSM 380gsm

 

Crash Lock Boxes

Regular price £8.70
  • CL-A 110x100x70mm
  • CL-B 160x150x75mm
  • CL-C 180x100x50mm
  • CL-D 220x111x78 mm
  • CL-E 252x136x88mm
  • CL-F 290x208x95mm
  • CL-G 320x200x130mm
  • CL-H 375x255x150mm
  • CL-J 426x300x150mm
  • CL-K 426x300x300mm
  • CL-PLS 187x162x152mm
  • CL-PLHM 227x162x152mm
  • CL-PLM 312x227x172mm
  • CL-PLL 417x272x197mm
CL-Series Mailer Box Sizes
Product Length
(in)
Width
(in)
Height
(in)
CL-A (CL0) 4.33 3.93 2.75
CL-B 6.29 5.90 2.95
CL-C 7.08 3.93 1.96
CL-D (CL1) 8.66 4.37 3.07
CL-E (CL2) 9.92 5.35 3.46
CL-F (CLM) 11.41 8.18 3.74
CL-G (CL3) 12.60 7.87 5.11
CL-H 14.70 10.00 5.70
CL-J (CL4) 16.77 11.80 5.90
CL-K 16.77 11.80 11.80
Calculating ...

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Maestro
  • Mastercard
  • PayPal
  • Shop Pay
  • Union Pay
  • Visa

At SR Mailing, we understand the importance of reliable and secure packaging to ensure the safe delivery of your products. Our crash lock boxes provide a dependable, efficient and professional packaging solution for businesses that need strong protection with fast assembly. Made from 100% recycled kraft paper, these boxes are designed to deliver both sustainability and performance. The clever crash lock base allows the box to pop into shape instantly, removing the need for excessive tape and speeding up packing times in busy fulfilment environments. Once assembled, the base forms a secure and sturdy seal that keeps your products safe during stacking, storage and transit.

Crash lock boxes are ideal for eCommerce businesses that want packaging that looks clean, operates smoothly and holds up under pressure. Their durable construction ensures excellent impact resistance, so items stay protected even when shipments are handled multiple times along the delivery chain. For a quick-to-use, eco-friendly and highly reliable packaging choice, crash lock boxes offer everything your business needs. 

Material Composition:  100% Recycled Kraft Paper
Recommended Storage Temperature 13-21°C (55.4°F – 69.8°F) for optimum performance.
Recyclable? Yes (With glue strip removed)
Biodegradable? Yes
Compostable? Yes
GSM 380gsm

 

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Crash Lock Boxes
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SATISFACTION GUARANTEED

SR might as well stand for Super Reliable.

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