12.5 x 20.5 - 4 Pass with Brackets12. 5 x 20. 5 4 Pass with Brackets TYPE: Parallel Flow CORE HEIGHT: 12 1 2'' CORE WIDTH: 20 1 2'' CORE THICKNESS: 3 4'' OVERALL HEIGHT: 12 1 2'' OVERALL WIDTH: 22 1 2'' FITTING INLET: #8 Male O Ring FITTING OUTLET: #6 Male O Ring NUMBER OF ROWS: 4 Pass SWITCH PORT: N A Parallel Flow, Non Serviceable Design Specifications Product Condition: New 100% brand new and high quality. The product is the same size as the original part, and replacement is