Pad Refills (Pack of 6 Pads) - 16" x 16" x 1" Quantity:Default They are easy to install

They are easy to install with custom air filters made to the sizes that you specify

with each stage capturing progressively smaller particles inside the filter

To find the size the old unit should have sizing information printed on it

the more efficient a filter is at removing particles

Either way

Pad Refills (Pack of 6 Pads) - 16" x 16" x 1" Quantity:Default They are easy to installPACK of 6 pads for Pad and Frame Air Filters Filtering inserts are anti microbial and are more efficient in capturing particles, such as dust, ragweed, pollen, etc., from the air stream, than standard fiberglass filters purchased at retail outlets. Filtering inserts are shipped in an easily stored packet.