6 M Ceramic Smooth Tile Depth Marker 6 Inch x 6 Inch with 4 Inch Lettering depth-marker-conveys_Numbers Only This is an air relief

This is an air relief valve made of nylon for Pentair SM and SMBW 2000 Filters

5 Gallon Gray Chemical Tank System with 45M2 Model Adjustable Flow Pump

) The underside ribs of the board are protected from direct contact with the Duraflex metal fulcrum by rubber channels (8) attached to the board with epoxy adhesive

The valve helps to relieve pressure that builds up inside the filter

6 M Ceramic Smooth Tile Depth Marker 6 Inch x 6 Inch with 4 Inch Lettering depth-marker-conveys_Numbers Only This is an air reliefThis ceramic pool depth marker is printed with 6 M and has a smooth surface. It's overall size is 6 Inch x 6 Inch and has a letter height of 4 Inches This ceramic pool tile is printed with ceramic glaze inks, then kiln fired to ensure the finest, most durable depth and safety marker line available. The smooth surface tiles are for waterline applications. Please note the M is not 4 inches, but is as pictured. Ceramic depth markers are essential for