Prefilters | McMaster-Carr

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Air Filters

Prefilter Air Filter Rolls

These rolls are an economical choice for protecting more expensive filters that catch finer particles.

Air Filter Pads

Cut these pads to the size you need.

Mildew-Resistant Reusable Air Filter Pads

Wash and reuse these lightweight filter pads that resist mildew growth.

Mildew-Resistant Reusable Air Filter Sample Packs

Determine the right pores per inch for your air filtering application—you'll receive several small samples with different pores per inch.

Mildew-Resistant Reusable Air Filter Rolls

Cut these lightweight filter rolls to the size you need. They are washable, reusable, and resist mildew growth.

Reusable Air Filter Rolls

Reusable Air Filter Rolls

Cut these washable, reusable rolls to the size you need.

Reusable Air Filter Pads

Wash and reuse these pads. Cut to the size you need.

Electronic Equipment Air Filter Pads

Designed for use with electronic equipment, these pads can withstand prolonged exposure to heat and humidity.

Air Filter Rolls for Automatic Roll Machines

Replace the filter roll in your automatic filtering equipment.

Panel Air Filters

Panel Air Filters

These filters are typically used as replacements in HVAC equipment.

Made-to-Order Panel Air Filters

Made-to-Order Panel Air Filters

Create a custom-sized filter or protective layer for expensive filters.

Reusable Metal Panel Filters

Reusable Metal Panel Filters

Also known as metal mesh filters. These filters can be washed and reused.

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)