Dura-Flow™ is specially designed permeable pavement with patented openings called ‘cupules’ that allow for fast cleaning of the joints using standard sweeping equipment. This latest evolution of permeable pavement is suitable for heavy-duty applications and is ADA compliant.


Special Order Colors


Minimum quantities and special pricing may apply. Contact us for more details.

Custom Finish Options



Smooth Premier

Smooth Premier

Il Campo®

Il Campo®

Series 3000®

Series 3000®

Custom Options

Custom Colors and Finishes
With so many different options for customization we ask that you contact your local Unilock Representative for more information about customizing this product.
Minimum quantities will apply.

Shapes & Sizes

Special Order


25 cm x 25 cm x 8 cm

9.875" x 9.875" x 3.125"


Two high performance layers are compressed and cured together to provide the highest quality of strength, durability, and everlasting color.
EnduraColor Plus Available
Minimum Quantities Apply            


Unit SqFt Per Per Bundle Soldier LnFt Per Sailor LnFt Per Units Per Lbs Per
Stones & Bundling Thickness Bundle Layer Section Stone Layers Sections SqFt Section Bundle SqFt Section Bundle SqFt Section Bundle Layers Section Bundle
Standard 8cm 74.17 0.5 7 147 2551.3
Sold in full bundles only.


Important Information

Field tests prove that DuraFlow outperforms other PICPs for routine maintenance. The full report is at the link below.

Want help calculating your order?
Use our interactive paver calculator to get quick, easy and accurate specifications for your project!

Paver Calculator


ASTM C 936 Standard Specifications for Solid Concrete Interlocking Paving Units

Conforms to:

  • C140 for Absorption and Compressive Strength > 8,000 PSI
  • C67 for Freeze-thaw Durability
  • C418 for Abrasion Durability

Unilock standards exceed 8,500 PSI for Dura-Flow™ products with:

  • 4% absorption avg.
  • 5% absorption max.
  • Dimensional Accuracy +/- 3/64”

Test results available upon request

Meets the U.S. Architectural & Transportation Barrier Compliance Board Slip-Resistance Surfaces Advisory Guidelines



Rainwater Management: LEED V4:

  • Up to three points can be achieved for retaining rainwater onsite based on the percentile kept
  • 85% (zero lot line projects only) – 3 points, 95% – 2 points and 98% – 3 points. (All except Healthcare – subtract one point) See LEED v4 for more specific project/site details.

Materials and Resources: LEED V4:

Building Product Disclosure and Optimization

Sourcing of Raw Materials – Sourcing of Raw Materials and Extraction • 1 point

Sourcing of Raw Materials – Leadership Extraction Practices • 1 point

Material Ingredient Reporting – Material Ingredient Reporting • 1 point

Material Ingredient Reporting – Material Ingredient Optimization • 1 point

Environmental Product Declaration • 1 point

View Product Datasheet