POREX® Underdrain Plates

Porex Underdrain Plates support sand and multimedia filtration beds in municipal, industrial, and residential water treatment processes. 

Product Specifications:

Bulk Density (pounds):        Cubic Foot = 39
Pore Volume:                     40 – 50%
Break Point:                       () /linear foot 
                                        (line load on wide span)
Modulus of Rupture:            () /square inch minimum
Air Permeability:                 100 SCFM ± 25% per ft2 
                                        (mean permeability per plate at water column)


Water Permeability:  (using of filter sand)

Underdrain Plate Water Permeability Chart