74817 Caldera Spa 100 Sq Ft Filter Cantabria 2009 to 2014
74817 Caldera Spa Factory Replacement 100 Square Foot Filter for Cantabria Model 2009 to 2014 second quarter. The filter was not used after the third quarter of 2014. If you have a 2014 or newer please check top of the filter, if it is enclosed, you have the new version and need to order # 73722
Length is 16 1/12 inches, Diameter is 8 inches , top and bottom holes 3.5 inches.