Fan Screens | McMaster-Carr

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113 Products

Equipment-Cooling Fan Guards


Style A	Style B	Style C

Style D	Style E

Protect fingers, cables, and debris from coming into contact with moving fan blades.

For Round and Square Fans


Style A	Style B

	For Fan			Nickel-Plated Steel		Black Electrocoated Steel		Gray Powder-Coated Steel		304 Stainless Steel
Style	Ht.	Wd.	Dia.		Each		Each		Each		Each



	A	0.98" (25 mm)	0.98" (25 mm)	0.98" (25 mm)	00000000	00000	———	0	———	0	000000000	00000


	B	0.98" (25 mm)	0.98" (25 mm)	0.98" (25 mm)	———	0	000000000	00000	———	0	———	0
	B	1.18" (30 mm)	1.18" (30 mm)	1.18" (30 mm)	000000000	0000	000000000	0000	———	0	———	0
	B	1.37" (35 mm)	1.37" (35 mm)	1.37" (35 mm)	000000000	0000	———	0	———	0	———	0
	B	1.41" (36 mm)	1.41" (36 mm)	1.41" (36 mm)	000000000	0000	———	0	———	0	———	0
	B	1.57" (40 mm)	1.57" (40 mm)	1.57" (40 mm)	00000000	0000	000000000	0000	———	0	000000000	0000
	B	1.97" (50 mm)	1.97" (50 mm)	1.97" (50 mm)	00000000	0000	000000000	0000	———	0	000000000	0000
	B	2.36" (60 mm)	2.36" (60 mm)	2.36" (60 mm)	00000000	0000	000000000	0000	———	0	000000000	0000
	B	2.75" (70 mm)	2.75" (70 mm)	2.75" (70 mm)	000000000	0000	———	0	———	0	———	0
	B	3.15" (80 mm)	3.15" (80 mm)	3.15" (80 mm)	00000000	0000	000000000	0000	———	0	000000000	0000
	B	3.62" (92 mm)	3.62" (92 mm)	3.62" (92 mm)	00000000	0000	000000000	0000	———	0	000000000	0000


	B	4.69", 4.72" (119 mm, 120 mm)	4.69", 4.72" (119 mm, 120 mm)	4.69", 4.72" (119 mm, 120 mm)	00000000	0000	000000000	0000	———	0	000000000	0000
	B	4.72" (120 mm)	4.72" (120 mm)	4.72" (120 mm)	000000000	0000	———	0	———	0	———	0
	B	5", 5.31" (127 mm, 135 mm)	5", 5.31" (127 mm, 135 mm)	5", 5.31" (127 mm, 135 mm)	00000000	0000	———	0	———	0	000000000	0000
	B	5.31" (127 mm)	5.31" (127 mm)	5.31" (127 mm)	———	0	000000000	0000	———	0	———	0
	B	6.89" (175 mm)	6.89" (175 mm)	6.89" (175 mm)	00000000	0000	———	0	———	0	———	0
	B	7.87" (200 mm)	7.87" (200 mm)	7.87" (200 mm)	00000000	00000	———	0	———	0	———	0
	B	8.86" (225 mm)	8.86" (225 mm)	8.86" (225 mm)	———	0	———	0	00000000	000000	———	0
	B	10" (254 mm)	10" (254 mm)	10" (254 mm)	00000000	0000	000000000	0000	———	0	000000000	00000
	B	11.02" (280 mm)	11.02" (280 mm)	11.02" (280 mm)	———	0	———	0	00000000	00000	———	0

For Square Fans

Style C

	For Fan			Black Plastic
Style	Ht.	Wd.	Temp. Range, ° F		Each



	C	1.57" (40 mm)	1.57" (40 mm)	15 to 165	00000000	00000


	C	2.36" (60 mm)	2.36" (60 mm)	15 to 165	00000000	0000
	C	3.15" (80 mm)	3.15" (80 mm)	15 to 165	00000000	0000
	C	3.62" (92 mm)	3.62" (92 mm)	15 to 165	00000000	0000
	C	4.69", 4.72" (119 mm, 120 mm)	4.69", 4.72" (119 mm, 120 mm)	15 to 165	00000000	0000

For Round and Oblong Fans


Style D	Style E

	For Fan				Nickel-Plated Steel		Black Electrocoated Steel		304 Stainless Steel		Black Plastic
Style	Ht.	Wd.	Dia.	Temp. Range, ° F		Each		Each		Each		Each



	D	5.91" (150 mm)	6.77" (172 mm)	5.91", 6.77" (150 mm, 172 mm)	—	00000000	00000	000000000	00000	000000000	00000	———	0


	E	5.91" (150 mm)	6.77" (172 mm)	5.91", 6.77" (150 mm, 172 mm)	15 to 165	———	0	———	0	———	0	00000000	00000

Shielded Equipment-Cooling Fan Guards

Made of conductive metal, these guards cover fans to block EMI (electromagnetic interference) and RFI (radio frequency interference). The screen also helps keep large debris out of your enclosure and protects fingers from spinning fans.

For Square Fans


Mesh	Honeycomb

Mesh—Mesh fan guards work for general purpose shielding.

Honeycomb—Honeycomb fan guards shield sensitive parts, such as precision measuring equipment. They have high interference reduction at frequency, also known as attenuation, so they block most interference. The beryllium copper gasket seals gaps between the fan guard and your enclosure for additional protection. Do not use in direct contact with acetylene.

	For Fan							Aluminum		Black-Oxide Aluminum
	Ht.	Wd.	Thk., mm	Interference Reduction @ Freq.	Screen Material	Gasket Material	Temp. Range, ° F		Each		Each
Mesh



		2.36" (60 mm)	2.36" (60 mm)	4.3	Not Rated	Stainless Steel	—	—	00000000	00000	000000000	00000


		3.15" (80 mm)	3.15" (80 mm)	4.3	Not Rated	Stainless Steel	—	—	00000000	0000	000000000	0000
		3.62" (92 mm)	3.62" (92 mm)	4.3	Not Rated	Stainless Steel	—	—	00000000	0000	000000000	0000
		4.69", 4.72" (119 mm, 120 mm)	4.69", 4.72" (119 mm, 120 mm)	4.3	Not Rated	Stainless Steel	—	—	00000000	0000	000000000	0000
		5", 5.31" (127 mm, 135 mm)	5", 5.31" (127 mm, 135 mm)	4.3	Not Rated	Stainless Steel	—	—	00000000	0000	———	0


		Honeycomb



				1.5" (38 mm)	1.5" (38 mm)	8.8	80 dB @ 1 GHz	Aluminum	Beryllium Copper	-55 to 150	0000000	000000	———	0


				1.57" (40 mm)	1.57" (40 mm)	8.8	80 dB @ 1 GHz	Aluminum	Beryllium Copper	-55 to 150	0000000	000000	———	0
				2.36" (60 mm)	2.36" (60 mm)	8.8	80 dB @ 1 GHz	Aluminum	Beryllium Copper	-55 to 150	0000000	000000	———	0
				3.15" (80 mm)	3.15" (80 mm)	8.8	80 dB @ 1 GHz	Aluminum	Beryllium Copper	-55 to 150	0000000	00000	———	0
				3.62" (92 mm)	3.62" (92 mm)	8.8	80 dB @ 1 GHz	Aluminum	Beryllium Copper	-55 to 150	0000000	00000	———	0
				4.72" (120 mm)	4.72" (120 mm)	8.8	80 dB @ 1 GHz	Aluminum	Beryllium Copper	-55 to 150	0000000	000000	———	0

For Round and Oblong Fans

Mesh

Mesh—Mesh fan guards work for general purpose shielding.

	For Fan						Aluminum		Black-Oxide Aluminum
	Ht.	Wd.	Dia.	Thk., mm	Interference Reduction @ Freq.	Screen Material		Each		Each
Mesh



		5.91" (150 mm)	6.77" (172 mm)	5.91", 6.77" (150 mm, 172 mm)	4.3	Not Rated	Stainless Steel	00000000	000000	000000000	000000

Equipment-Cooling Fan Guards with Filters

Filters remove dust and other particles from the air.

For Square Fans

Replacement Filters—Replacement filters are sold separately.

Guards							Replacement Filters
For Fan					Plastic
Ht.	Wd.	Filter Pores per In.	Filter Material	Temp. Range, ° F		Each	Pkg. Qty.		Pkg.



	1.57" (40 mm)	1.57" (40 mm)	30	Foam	15 to 165	0000000	00000	5	0000000	00000


	2.36" (60 mm)	2.36" (60 mm)	30	Foam	15 to 165	0000000	0000	5	0000000	0000
	3.15" (80 mm)	3.15" (80 mm)	30	Foam	15 to 165	0000000	0000	5	0000000	0000
	3.62" (92 mm)	3.62" (92 mm)	45	Foam	15 to 165	00000000	0000	5	00000000	0000
	4.69", 4.72" (119 mm, 120 mm)	4.69", 4.72" (119 mm, 120 mm)	45	Foam	15 to 165	00000000	0000	5	00000000	0000

For Round and Oblong Fans

Replacement Filters—Replacement filters are sold separately.

Guards								Replacement Filters
For Fan						Plastic
Ht.	Wd.	Dia.	Filter Pores per In.	Filter Material	Temp. Range, ° F		Each	Pkg. Qty.		Pkg.



	5.91" (150 mm)	6.77" (172 mm)	5.91", 6.77" (150 mm, 172 mm)	60	Foam	15 to 165	0000000	00000	5	0000000	00000

Intake and Exhaust Enclosure Hoods

Image of Product. Front orientation. Contains Annotated. Enclosure Hoods.

These hoods keep your enclosure watertight, even around intake and exhaust cutouts. The silicone seal shuts out water and dust, while the slanted top lets water roll off. When used over fans or vents rated IP54 or higher, hoods meet IP56 and NEMA 4X to help protect your electronics from wet and corrosive environments, dust, and washdowns. They also meet American, Canadian, and European safety standards.

Screw the mounting bracket around your fan or vent, then clip the hood on. Pop it off for cleaning, changing filters, and other maintenance.

Cutout		Overall						Mounting Holes
Ht.	Wd.	Ht.	Wd.	Dp.	Material	Enclosure Rating	Mounting Fasteners Included	No. of	Dia.	Certification		Each
5 1/2"	5"	8 3/8"	7 5/8"	1 7/8"	Stainless Steel	IP56, NEMA 4X	No	4	0.15"	C-UL Recognized Component, CE Marked, UL Recognized Component	0000000	0000000
6 3/4"	6 1/4"	11"	8 7/8"	2 1/4"	Stainless Steel	IP56, NEMA 4X	No	4	0.15"	C-UL Recognized Component, CE Marked, UL Recognized Component	0000000	000000
9 1/4"	8 1/2"	14 1/8"	11 5/8"	2 5/8"	Stainless Steel	IP56, NEMA 4X	No	6	0.15"	C-UL Recognized Component, CE Marked, UL Recognized Component	0000000	000000
11 3/8"	11 1/4"	16 3/8"	14 1/2"	3"	Stainless Steel	IP56, NEMA 4X	No	6	0.15"	C-UL Recognized Component, CE Marked, UL Recognized Component	0000000	000000
13 3/8"	12 3/4"	19 1/8"	16 1/8"	4"	Stainless Steel	IP56, NEMA 4X	No	6	0.15"	C-UL Recognized Component, CE Marked, UL Recognized Component	0000000	000000

Exhaust-Side Exhaust Fan Guards for Wall-Mount Exhaust Fans

Protect the exhaust side of your wall-mount exhaust fans from debris.

	Overall
For Blade Dia.	Ht.	Wd.	Dp.	Material	Mounting Fasteners Included		Each
12"	13 3/4"	13 3/4"	6"	Galvanized Steel	Yes	00000000	0000000
14", 16"	19 3/4"	19 3/4"	6"	Galvanized Steel	Yes	00000000	000000
18"	21 3/4"	21 3/4"	6"	Galvanized Steel	Yes	00000000	000000
20", 24"	27 3/4"	27 3/4"	6"	Galvanized Steel	Yes	00000000	000000
30"	33 3/4"	33 3/4"	6"	Galvanized Steel	Yes	00000000	000000
36"	39 3/4"	39 3/4"	6"	Galvanized Steel	Yes	00000000	000000
42"	45 3/4"	45 3/4"	6"	Galvanized Steel	Yes	00000000	000000

Supply-Side Exhaust Fan Guards for Wall-Mount Exhaust Fans

Protect the supply side of your wall-mount exhaust fans from debris.

	Overall
For Blade Dia.	Ht.	Wd.	Dp.	Material	Mounting Fasteners Included		Each
12"	16 1/4"	16 1/4"	16"	Galvanized Steel	Yes	00000000	0000000
14", 16"	22 1/4"	22 1/4"	16"	Galvanized Steel	Yes	00000000	000000
18"	24 1/4"	24 1/4"	16"	Galvanized Steel	Yes	00000000	000000
20", 24"	30 1/2"	30 1/2"	25"	Galvanized Steel	Yes	00000000	000000
30"	36 1/2"	36 1/2"	25"	Galvanized Steel	Yes	00000000	000000
36"	42 1/2"	42 1/2"	28"	Galvanized Steel	Yes	00000000	000000
42"	48 1/2"	48 1/2"	34 1/2"	Galvanized Steel	Yes	00000000	000000
48"	54 1/2"	54 1/2"	36 1/2"	Galvanized Steel	Yes	00000000	00000000

Fan Guards

These two-piece guards attach to NEMA frame motors.

Guard Dia.	For Motor Frame Size	Guard Material		Each



18", 20"	23"	NEMA 42Y	Chrome-Plated Steel	000000	0000000


24"	27"	NEMA 48, NEMA 48Y, NEMA 48YZ, NEMA 56, NEMA 56Y, NEMA 56YZ	Chrome-Plated Steel	000000	000000
30"	33 1/2"	NEMA 48, NEMA 48Y, NEMA 48YZ, NEMA 56, NEMA 56Y, NEMA 56YZ	Chrome-Plated Steel	000000	000000

Fan Shroud Filters


Fan-Front Mount	Fan-Back Mount


Fan-Front Mount Polypropylene Filter	Fan-Back Mount Polyester Plastic Filter	Fan-Back Mount Polypropylene Filter

These filters fit over fans with round guards to trap dust and debris, keeping contaminants out of the air and off of your fan. An elastic band holds them securely in place.

Fan-Front Mount—Fan-front-mount filters fit over the entire front of fans, blocking dust that has entered the fan from blowing back out into the air.

Fan-Back Mount—Fan-back-mount filters have a center hole, and secure around a fan’s motor housing with a hook and loop closure. They filter air as it enters the fan, protecting the blades and bearings from wear and damage while also reducing the amount of dust the fan will blow out.

Polyester Plastic Filter—Polyester plastic filters are disposable—replace them when they’re dirty.

Polypropylene Filter—Polypropylene filters have an electrostatic charge that attracts particles, and can be washed and reused.

White—Dirt and dust stands out on white filters, so it’s easy to see when they need to be cleaned or replaced.

	Pkg. Qty.		Pkg.
Fan-Front Mount







	Polypropylene Filter

	20"	Not Rated	White	1	00000000	000000


	24"	Not Rated	White	1	00000000	00000
	26"	Not Rated	White	1	00000000	00000
	30"	Not Rated	White	1	00000000	00000


	Fan-Back Mount







					Polyester Plastic Filter

					18"	Not Rated	White	12	00000000	000000


					24"	Not Rated	White	12	00000000	000000
					26"	Not Rated	White	12	00000000	000000
					30"	Not Rated	White	12	00000000	000000
					32"	Not Rated	White	12	00000000	000000
					36"	Not Rated	White	12	00000000	000000




							Polypropylene Filter

							17"	Not Rated	White	1	00000000	00000


							24"	Not Rated	White	1	00000000	00000
							30"	Not Rated	White	1	00000000	000000
							34"	Not Rated	White	1	00000000	000000
							38"	Not Rated	White	1	00000000	000000