8 3/8 × 11 1/4 Filters | McMaster-Carr

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	Trade Size Trade Size	Show

8 3/8 × 11 1/4

	Trade Size Trade Size	Hide

7 3/16 × 9 11/16

7 3/8 × 16 1/2

8 3/8 × 11 1/4

8 3/4 × 20 7/8

9 3/8 × 16 1/2

11 3/8 × 17 3/8

11 1/2 × 23 1/2

11 3/4 × 13 1/2

12 1/16 × 21 3/4

13 1/8 × 13 1/8

17 7/8 × 11 7/8

22 1/4 × 30 1/4

23 3/8 × 23 3/8

23 1/2 × 23 1/2

25 1/2 × 35 1/2

	Filter Style Filter Style

	Panel

	For Removing For Removing

Dust and Particles

	Useful Life Useful Life

	System of Measurement System of Measurement

	Thickness Thickness

	Frame Material Frame Material

	Specifications Met Specifications Met

	Air Filter Performance Air Filter Performance

	Air Filter Performance Air Filter Performance

	Construction Construction

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Maximum Temperature Maximum Temperature

100° to 249.9° F

	Material Material

	For Use With For Use With

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Prefilter Panel Air Filters

These filters are an economical choice for protecting more expensive filters that catch finer particles. They are typically used as replacement prefilters in HVAC equipment.

They meet UL 900 flame retardance requirements. Actual size is up to 5/8" less than trade size.

Don’t see the size you need? Additional sizes are available.

For technical drawings and 3-D models, click on a part number.

1/2" Thick
Trade Size	Material	Frame Material	Max. Temperature, °F	Pkg. Qty.		Pkg.

8 3/8 × 11 1/4	Fiberglass	Cardboard	180°	12	0000000	000000

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