This 3-in-1 filter has dimensions of 19.69 x 24.69 x 0.81, slightly different from the nominal size. It is designed to trap unwanted particles with exclusive Filtrete technology. With a 300 MPR and MERV 5 rating, it effectively captures many particles from the air. The price drops from $44.38 to $31.26 to $29.70 when checking out via Subscribe & Save. Shipping is free over $35. 

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