BMP Supplies

BMP Drain Guard “Witches Hat” 36″ x 48″ Skirt

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BMP Supplies is a specialized manufacturing company supplying Erosion and Sediment Control products for the Construction Industry.

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BMP Drain Guard “Witches Hat” 36″ x 48″ Skirt

BMP’s Drain Guard is installed underneath CB grate to filter sediment filled rainwater running from your job-site. The rainwater and sediment fall into the catch basin and filter through the Drain Guard.


  • Material: Non-Woven, Polypropylene Geotextile
  • Weight 8 oz
  • Grab Tensile 205 lbs.
  • Grab Elongation 50%
  • Trapezoid Tear 85 lbs.
  • CBR Puncture Resistance 535 lbs.
  • Permittivity 1.35 sec
  • Water Flow 90 gpm/ft2
  • AOS 80/0.18
  • UV Resistance 70/500