Cartridge diameter - 8"
Cartridge length - 5-7/8"
Top configuration - Semi-Circular Handle, Bottom configuration - Modified ACME
Bottom dimension - 2"
Square footage - 35
Spa OEM's that use this filter cartridge- Bull Frog Spas- 2003-2012 fits all Spas manufactured from 2003 to 2012, (Except STIL)