Support Gravel

NWP-SG-box-165x165Northern Filter Media’s pool support gravel possesses the perfect attributes to support the filter media whether it’s Zeobest, Zeobest Ultra or Northern Filter Sand. Our support gravel provides for a much more complete and thorough backwash of the filter media by defusing the backwash water in many more directions than laterals do by themselves.

Our support gravel is multi-colored, hard and rounded. We size it to the exact specifications needed for pool filters: 1/4×1/8 inch. Properly placed, Northern Support Gravel will help protect and extend the life of your filter laterals.

Northern’s Support Gravel meets or exceeds AWWA B100-16 (latest edition) and certified under ANSI Standard 61.


  • More thorough backwash by defusing the backwash in many more directions
  • Supports the filter media
  • Specific Gravity: 2.65+
  • Protects the laterals
  • Extends the life of the laterals

Physical Characteristics

  • Hard, rounded and multi-colored
  • Weight: 100-pounds per cubic foot
  • Size: 1/4 x 1/8 inch
  • Packaging: 50-pound or 100-pound bag
Download Support Gravel MSDS
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