DuraVent 4DFS-FC PelletVent Connector/Adapter - 4" Type_Heater Element and occasionally breaking loose as

and occasionally breaking loose as visible "black flakes" or grey debris when the jets are turned on after a long shutdown

Choice of CPI/IPI

so the filter holds its performance rather than matting down after a season

and far less scrubbing

Filtration is what keeps spa water clear and comfortable

DuraVent 4DFS-FC PelletVent Connector/Adapter - 4" Type_Heater Element and occasionally breaking loose asDuraVent 4DFS FC PelletVent Connector Adapter 4" Overview DuraVent PelletVent Pro features twist lock construction in both 3" and 4" diameters. Listed at 1" clearance to combustibles in the USA. This PelletVent Pro can be used in both vertical and horizontal installations. Stainless Steel welded seam inner wall, combined with galvalume welded seam outer wall. Whats in the Box 1 x DuraVent 4DFS FC PelletVent Connector Adapter 4" Specifications