18 × 25 Filters | McMaster-Carr

Filter by

HVAC Filter Trade Size

System of Measurement

Inch

Thickness

3/8"

Filter Type

Panel

MERV Filter Rating

Reusable

For Removing

Frame Material

Material

Export Control Classification Number (ECCN)

EAR99

DFARS Specialty Metals

REACH

RoHS

For Use With

Air Filter Performance

Prefilter

Filter Efficiency @ 3 Microns

20%

35%

73%

Removes Particle Size Down To

Maximum Temperature

Specifications Met

Construction

Support Grill Material

Steel

Filter Efficiency @ 1 Microns

44%

Frame Gauge

Frame Finish

Certification

For Filter Thickness

12 Products

Heating, Ventilation, and Air Conditioning

Air Filters

Trap dust and debris in HVAC, exhaust, and electronics systems to improve efficiency and air quality

8 products

Air Filter Frames

Hold panel filters as well as filter rolls and pads in place in HVAC systems

4 products