75sq/ft Filter for Coleman/Maax Spas. 13" length (not including stem), 8" diameter, with stem on one side and 2 1/8" hole on the other side. Commonly used on 1994-1995 models: 247 250 255 411 447 450 455 468, 1996-1997 models: 247 250 255 302 303 411 447 450 455 468, 1998 models: 107 247 250 255 260 302 303 411 447 448 450 455, 1999 models: 107 250 255 260 411 447 448 450 455, 2000 models: 106 107 155 411 447 448 450 455 504 506, 2001-2001 models: 106 107 155 547 548 550 555 605 607 608 704 705 706, 2003 models:107 461 470 471 472 480 481 482 605 705 706, 2004 models: 107 470 471 472 480 481 482 705 706, 2006-2008 models: 107 470 471 472 480 481 482 705 706 M6