The physical specifications of the respective replacement filter cartridge includes 5 5/16 inch width and 21 5/16 inch length and open holes of 2 1/8 inch each on both the ends. Further, the technical specifications are in respect with OEM# 817-0098 and thus, it can serve as the replacement for Filbur# FC-2975, Pleatco# PCST80 and Unicel# C-5396. The easy to maintain replacement filter cartridge can be used in 100 square feet Waterway and Coast Spas (Canada).