Exact MERV 4

6 x 21 3/4 x 1 basic filters in the the exact size of 6 x 21 3/4 x 1. Finding the perfect fit filter isn't always easy so we teamed up with a leadi...

6 x 21 5/8 x 1 basic filters in the the exact size of 6 x 21 5/8 x 1. Finding the perfect fit filter isn't always easy so we teamed up with a leadi...

6 x 21 1/2 x 1 basic filters in the the exact size of 6 x 21 1/2 x 1. Finding the perfect fit filter isn't always easy so we teamed up with a leadi...

6 x 21 3/8 x 1 basic filters in the the exact size of 6 x 21 3/8 x 1. Finding the perfect fit filter isn't always easy so we teamed up with a leadi...

6 x 21 1/4 x 1 basic filters in the the exact size of 6 x 21 1/4 x 1. Finding the perfect fit filter isn't always easy so we teamed up with a leadi...

6 x 21 1/8 x 1 basic filters in the the exact size of 6 x 21 1/8 x 1. Finding the perfect fit filter isn't always easy so we teamed up with a leadi...

6 x 20 7/8 x 1 basic filters in the the exact size of 6 x 20 7/8 x 1. Finding the perfect fit filter isn't always easy so we teamed up with a leadi...

6 x 20 3/4 x 1 basic filters in the the exact size of 6 x 20 3/4 x 1. Finding the perfect fit filter isn't always easy so we teamed up with a leadi...

6 x 20 5/8 x 1 basic filters in the the exact size of 6 x 20 5/8 x 1. Finding the perfect fit filter isn't always easy so we teamed up with a leadi...

6 x 20 1/2 x 1 basic filters in the the exact size of 6 x 20 1/2 x 1. Finding the perfect fit filter isn't always easy so we teamed up with a leadi...

6 x 20 3/8 x 1 basic filters in the the exact size of 6 x 20 3/8 x 1. Finding the perfect fit filter isn't always easy so we teamed up with a leadi...

6 x 20 1/4 x 1 basic filters in the the exact size of 6 x 20 1/4 x 1. Finding the perfect fit filter isn't always easy so we teamed up with a leadi...

6 x 20 1/8 x 1 basic filters in the the exact size of 6 x 20 1/8 x 1. Finding the perfect fit filter isn't always easy so we teamed up with a leadi...

6 x 19 7/8 x 1 basic filters in the the exact size of 6 x 19 7/8 x 1. Finding the perfect fit filter isn't always easy so we teamed up with a leadi...

6 x 19 3/4 x 1 basic filters in the the exact size of 6 x 19 3/4 x 1. Finding the perfect fit filter isn't always easy so we teamed up with a leadi...

6 x 19 5/8 x 1 basic filters in the the exact size of 6 x 19 5/8 x 1. Finding the perfect fit filter isn't always easy so we teamed up with a leadi...

6 x 19 3/8 x 1 basic filters in the the exact size of 6 x 19 3/8 x 1. Finding the perfect fit filter isn't always easy so we teamed up with a leadi...

6 x 19 1/4 x 1 basic filters in the the exact size of 6 x 19 1/4 x 1. Finding the perfect fit filter isn't always easy so we teamed up with a leadi...

6 x 19 1/8 x 1 basic filters in the the exact size of 6 x 19 1/8 x 1. Finding the perfect fit filter isn't always easy so we teamed up with a leadi...

6 x 18 7/8 x 1 basic filters in the the exact size of 6 x 18 7/8 x 1. Finding the perfect fit filter isn't always easy so we teamed up with a leadi...

6 x 18 3/4 x 1 basic filters in the the exact size of 6 x 18 3/4 x 1. Finding the perfect fit filter isn't always easy so we teamed up with a leadi...

6 x 18 5/8 x 1 basic filters in the the exact size of 6 x 18 5/8 x 1. Finding the perfect fit filter isn't always easy so we teamed up with a leadi...

6 x 18 1/2 x 1 basic filters in the the exact size of 6 x 18 1/2 x 1. Finding the perfect fit filter isn't always easy so we teamed up with a leadi...

6 x 18 3/8 x 1 basic filters in the the exact size of 6 x 18 3/8 x 1. Finding the perfect fit filter isn't always easy so we teamed up with a leadi...