$108.00
Sku: UF13-42020-6
Nominal Size : 20x20x4
Actual Size : 19-1/2 x 19-1/2 x 3-3/4
Part #: UF13-42020-6
MERV: 13
Case: 6

Price: $144.99 

*Effective for dust, pollen, pet dander, bacteria and mould.