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US 400/420DB-XL

US 400/420DB-XL

Prefabricated Drainage Composite

US 400DB-XL consists of a high flow dimpled drainage core formed from a moderate duty impermeable polymeric sheet cuspated under heat and pressure then bonded to a layer of non-woven filter fabric. The filter fabric retains soil and sand particles or freshly placed concrete or grout, allowing filtered water to pass into the drainage core. Collected water is then conveyed to the US SWD collection system.

US 400DB_XL performs a multi-faceted role by providing protection for waterproofing systems and managing sub-surface water around building foundations. US 420DB has an added membrane protective film on the back side.

Property Test Method English Metric
Compressive Strength - Core ASTM D-1621 16500 p/f² 790 kN/m²
Flow - Fabric ASTM D-4491 110 g/min/f² 4481 l/min/f²
Thickness - Core ASTM D-1777 0.4 in 10.16 mm
Flow - Core ASTM D-4716 21 g/min/ft 260 l/min/m
Apparent Opening Size - Fabric ASTM D-4751 70 USSieve 0.212 mm
CBR Puncture - Fabric ASTM D-6241 410 lbs 1.825 kN
Grab Tensile - Fabric ASTM D-4632 160 lbs 0.712 kN
  • (1) At the time of manufacturing. Handling, storage, and shipping may change these properties.
  • (2) Maximum average roll value (MaxARV).
  • (3) Historical reference values. These properties are no longer recognized by ASTM or AASHTO for geosynthetics.

US 400/420DB-XL Shipping & Packaging Information

Roll Size Roll Diameter Roll Width Roll Weight Rolls per Trailer
4' x 50' 20" 4' 46.5 lbs 265

US 400/420DB-XL Installation and Use Instructions

This information is provided for reference only and is not intended as a warranty or guarantee. US Fabrics assumes no liability in connection with the use of this information.