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

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	For Use With For Use With

	System of Measurement System of Measurement

	Thickness Thickness

	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

24 1/2 × 22 1/2

25 1/2 × 35 1/2

	Filter Style Filter Style

	Panel

	For Removing For Removing

Dust and Particles

	Frame Material Frame Material

	Material Material

	Maximum Temperature Maximum Temperature

100° to 249.9° F

	MERV Filter Rating MERV Filter Rating

	Specifications Met Specifications Met

UL

	Useful Life Useful Life

	Filter Efficiency Rating Filter Efficiency Rating

	Construction Construction

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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.

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

8 3/8 × 11 1/4	Not Rated	Fiberglass	Cardboard	180°	12	0000000	000000

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

Prefilter Panel Air Filters