Computer Fan Covers | McMaster-Carr

Filter by

For Fan Width

For Fan Shape

Oblong

Round

Square

For Fan Height

For Fan Diameter

Frame Material

Screen Material

Frame Finish

Material

Frame Color

Thickness

Construction

RoHS

DFARS Specialty Metals

Exempt

REACH

Compliant

Not Compliant

Export Control Classification Number (ECCN)

Maximum Temperature

Finish

Minimum Temperature

Color

Interference Reduction @ Frequency

80 dB @ 1 GHz

Not Rated

Filter Pores per Inch

Forward

How can we improve?

75 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.

Fan 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.

Fan 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