Miniature Louvers | McMaster-Carr

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83 Products

Louvers for Enclosures

Relieve heat buildup and prevent condensation from forming inside enclosures and other small spaces.

Surface Mount

Surface

Mount

Gray Powder-Coated Steel Frame and Blades—Powder-coated steel louvers are rugged and durable.

316 Stainless Steel Frame and Blades—316 stainless steel louvers are rugged and durable.

	For Opening		Overall				Mounting
	Wd.	Ht.	Wd.	Ht.	Blade Thk.	No. of Panels	Fasteners Included	Hole Dia.		Each
Gray Powder-Coated Steel Frame and Blades







				Standard Louver Collar

				1 3/4"	2"	3 1/4"	3 1/4"	0.075"	1	Yes	7/32"	0000000	000000


				3"	2 5/8"	4 1/2"	3 7/8"	0.075"	1	Yes	7/32"	0000000	00000
				3"	3 1/2"	4 1/2"	4 3/4"	0.075"	1	Yes	7/32"	0000000	00000
				4"	3 1/4"	5 1/2"	4 1/2"	0.075"	1	Yes	7/32"	0000000	00000
				4"	4 3/8"	5 1/2"	5 5/8"	0.075"	1	Yes	7/32"	0000000	00000
				6"	4 3/8"	7 1/2"	5 5/8"	0.075"	1	Yes	7/32"	0000000	00000
				6"	6 5/8"	7 1/2"	7 7/8"	0.075"	1	Yes	7/32"	0000000	00000
				8"	4 9/16"	9 1/2"	5 13/16"	0.075"	1	Yes	7/32"	0000000	00000
				8"	6 15/16"	9 1/2"	8 3/16"	0.075"	1	Yes	7/32"	0000000	00000
				8"	9 5/16"	9 1/2"	10 9/16"	0.075"	1	Yes	7/32"	0000000	00000
				8"	14 1/16"	9 1/2"	15 5/16"	0.075"	1	Yes	7/32"	0000000	00000


				316 Stainless Steel Frame and Blades







								Standard Louver Collar

								1 3/4"	2"	3 1/4"	3 1/4"	0.075"	1	Yes	7/32"	0000000	000000


								3"	2 5/8"	4 1/2"	3 7/8"	0.075"	1	Yes	7/32"	0000000	000000
								3"	3 1/2"	4 1/2"	4 3/4"	0.075"	1	Yes	7/32"	0000000	000000
								4"	3 1/4"	5 1/2"	4 1/2"	0.075"	1	Yes	7/32"	0000000	000000
								4"	4 3/8"	5 1/2"	5 5/8"	0.075"	1	Yes	7/32"	0000000	000000
								6"	4 3/8"	7 1/2"	5 5/8"	0.075"	1	Yes	7/32"	0000000	000000
								6"	6 5/8"	7 1/2"	7 7/8"	0.075"	1	Yes	7/32"	0000000	000000
								8"	4 9/16"	9 1/2"	5 13/16"	0.075"	1	Yes	7/32"	0000000	000000
								8"	6 15/16"	9 1/2"	8 3/16"	0.075"	1	Yes	7/32"	0000000	000000
								8"	9 5/16"	9 1/2"	10 9/16"	0.075"	1	Yes	7/32"	0000000	000000
								8"	14 1/16"	9 1/2"	15 5/16"	0.075"	1	Yes	7/32"	0000000	000000

Flush Mount


White Plastic Frame and Blades	Aluminum Frame and Blades	Anodized Aluminum Frame and Blades

Black Anodized Aluminum Frame and Blades	White Powder-Coated Aluminum Frame and Blades	Flush Mount

Aluminum Frame and Blades—All aluminum louvers have small openings between their blades to stop bugs from getting inside your enclosure.

Anodized Aluminum Frame and Blades—All aluminum louvers have small openings between their blades to stop bugs from getting inside your enclosure. Anodized aluminum louvers withstand corrosion better than unfinished and powder-coated aluminum louvers. They’re good for settings such as saltwater environments.

Black Anodized Aluminum Frame and Blades—All aluminum louvers have small openings between their blades to stop bugs from getting inside your enclosure. Black anodized aluminum louvers withstand corrosion better than unfinished and powder-coated aluminum louvers. They’re good for settings such as saltwater environments.

White Powder-Coated Aluminum Frame and Blades—All aluminum louvers have small openings between their blades to stop bugs from getting inside your enclosure.

Darkroom Environments—Darkroom louvers have a shield on the back that blocks out light—use them where light control is a concern.

		Overall
	For Opening Dia.	Dia.	Dp.	For Min. Wall Thk.	For Max. Wall Thk.	Blade Thk.	No. of Panels	Mounting Fasteners Included	Pkg. Qty.		Pkg.
White Plastic Frame and Blades







				Standard Louver Collar

				2"	2 1/2"	1"	1/8"	—	0.07"	1	No	1	0000000	00000


				3"	3 1/2"	1"	1/8"	—	0.07"	1	No	1	0000000	0000
				4"	4 1/2"	1"	1/8"	—	0.07"	1	No	1	0000000	0000


				Aluminum Frame and Blades







								Standard Louver Collar

								1"	1 1/4"	3/8"	1/8"	—	0.015"	1	No	12	000000	00000


								1 1/2"	1 3/4"	3/8"	1/8"	—	0.015"	1	No	12	000000	00000
								2"	2 1/2"	1/2"	1/8"	—	0.015"	1	No	12	000000	00000
								2 1/2"	3"	5/8"	1/8"	—	0.015"	1	No	1	000000	0000
								3"	3 1/2"	5/8"	1/8"	—	0.015"	1	No	1	0000000	0000
								4"	4 1/2"	3/4"	1/8"	—	0.015"	1	No	1	0000000	0000




										Tabbed Louver Collar

										1"	1 1/8"	3/8"	—	1/8"	0.015"	1	No	1	0000000	0000


										1 1/2"	1 3/4"	3/8"	—	1/8"	0.015"	1	No	1	0000000	0000
										2"	2 3/8"	1/2"	—	1/8"	0.015"	1	No	1	0000000	0000
										2 1/2"	2 15/16"	5/8"	—	1/8"	0.015"	1	No	1	0000000	0000
										3"	3 1/2"	5/8"	—	1/8"	0.015"	1	No	1	0000000	0000
										4"	4 1/2"	3/4"	—	1/8"	0.015"	1	No	1	0000000	0000


										Anodized Aluminum Frame and Blades







														Standard Louver Collar

														1"	1 1/8"	3/8"	1/8"	—	0.015"	1	No	1	0000000	0000


														1 1/2"	1 3/4"	3/8"	1/8"	—	0.015"	1	No	1	0000000	0000
2"														2 3/8"	1/2"	1/8"	—	0.015"	1	No	1	0000000	0000
2 1/2"	2 15/16"													5/8"	1/8"	—	0.015"	1	No	1	0000000	0000
3"	3 1/2"													5/8"	1/8"	—	0.015"	1	No	1	0000000	0000
4"	4 1/2"													3/4"	1/8"	—	0.015"	1	No	1	0000000	0000




		Tabbed Louver Collar

		1"	1 1/8"											3/8"	—	1/8"	0.015"	1	No	1	0000000	0000


		1 1/2"	1 3/4"											3/8"	—	1/8"	0.015"	1	No	1	0000000	0000
		2"	2 3/8"											1/2"	—	1/8"	0.015"	1	No	1	0000000	0000
		2 1/2"	2 15/16"											5/8"	—	1/8"	0.015"	1	No	1	0000000	0000
		3"	3 1/2"											5/8"	—	1/8"	0.015"	1	No	1	0000000	0000
		4"	4 1/2"											3/4"	—	1/8"	0.015"	1	No	1	0000000	0000


		Black Anodized Aluminum Frame and Blades







						Standard Louver Collar

						1"	1 1/8"							3/8"	1/8"	—	0.015"	1	No	1	0000000	0000


						1 1/2"	1 3/4"							3/8"	1/8"	—	0.015"	1	No	1	0000000	0000
						2"	2 3/8"							1/2"	1/8"	—	0.015"	1	No	1	0000000	0000
						2 1/2"	2 15/16"							5/8"	1/8"	—	0.015"	1	No	1	0000000	0000
						3"	3 1/2"							5/8"	1/8"	—	0.015"	1	No	1	0000000	0000
						4"	4 1/2"							3/4"	1/8"	—	0.015"	1	No	1	0000000	0000




								Standard Louver Collar—Darkroom Environments

								4"	4 1/2"					3/4"	1/8"	—	0.015"	1	No	1	000000	00000


								White Powder-Coated Aluminum Frame and Blades







																Standard Louver Collar

										1"	1 1/4"					3/8"	1/8"	—	0.015"	1	No	12	0000000	00000


										1 1/2"	1 3/4"					3/8"	1/8"	—	0.015"	1	No	1	0000000	0000
										2"	2 1/2"	1/2"				1/8"	—	0.015"	1	No	1	0000000	0000
										2 1/2"	2 15/16"	5/8"	1/8"			—	0.015"	1	No	1	0000000	0000
										3"	3 1/2"	5/8"	1/8"			—	0.015"	1	No	1	0000000	0000
										4"	4 1/2"	3/4"	1/8"			—	0.015"	1	No	1	0000000	0000

Weather-Resistant Louvers for Enclosures

With a gasketed sealing kit, these louvers shield your enclosure from dirt, moisture, and weather while regulating heat and stopping condensation from forming inside. All have an aluminum mesh filter that keeps out solid debris and water.

1 Panel


	Surface Mount	Replacement Louver Filters

Stainless Steel Frame and Blades—Stainless steel louvers stand up to corrosion better than powder-coated steel louvers.

	Louvers														Replacement Louver Filters
	For Opening		Overall			Mounting
	Wd.	Ht.	Wd.	Ht.	Blade Thk.	Profile	Fasteners Included	Hole Dia.	For Use Outdoors	Enclosure Rating	Certification	Includes		Each		Each
Gray Powder-Coated Steel Frame and Blades



		2 3/4"	3"	5 5/16"	5 9/16"	0.07"	Surface	Yes	1/4"	Yes	NEMA 3R	CSA Certified, UL Recognized Component	One Aluminum Mesh Filter, Two Mounting Brackets	0000000	000000	00000000	000000


		3 3/4"	2 7/8"	6 5/16"	5 5/16"	0.07"	Surface	Yes	1/4"	Yes	NEMA 3R	CSA Certified, UL Recognized Component	One Aluminum Mesh Filter, Two Mounting Brackets	0000000	00000	00000000	00000
		3 3/4"	4"	6 5/16"	6 3/8"	0.07"	Surface	Yes	1/4"	Yes	NEMA 3R	CSA Certified, UL Recognized Component	One Aluminum Mesh Filter, Two Mounting Brackets	0000000	00000	00000000	00000


		Stainless Steel Frame and Blades



				2 3/4"	3"	5 5/16"	5 9/16"	0.07"	Surface	Yes	1/4"	Yes	NEMA 3R	CSA Certified, UL Recognized Component	One Aluminum Mesh Filter, Two Mounting Brackets	0000000	000000	00000000	00000


				3 3/4"	2 7/8"	6 5/16"	5 5/16"	0.07"	Surface	Yes	1/4"	Yes	NEMA 3R	CSA Certified, UL Recognized Component	One Aluminum Mesh Filter, Two Mounting Brackets	0000000	000000	00000000	00000
				3 3/4"	4"	6 5/16"	6 3/8"	0.07"	Surface	Yes	1/4"	Yes	NEMA 3R	CSA Certified, UL Recognized Component	One Aluminum Mesh Filter, Two Mounting Brackets	0000000	000000	00000000	00000

2 Panels


	Surface Mount	Replacement Louver Filters

	Louvers														Replacement Louver Filters
	For Opening		Overall			Mounting
	Wd.	Ht.	Wd.	Ht.	Blade Thk.	Profile	Fasteners Included	Hole Dia.	For Use Outdoors	Enclosure Rating	Certification	Includes		Each		Each
Gray Powder-Coated Steel Frame and Blades



		5 3/4"	3 1/2"	8 5/16"	6 3/8"	0.07"	Surface	Yes	1/4"	Yes	NEMA 3R	CSA Certified, UL Recognized Component	One Aluminum Mesh Filter, Two Mounting Brackets	0000000	000000	00000000	000000


		5 3/4"	5 3/4"	8 5/16"	8 11/16"	0.07"	Surface	Yes	1/4"	Yes	NEMA 3R	CSA Certified, UL Recognized Component	One Aluminum Mesh Filter, Two Mounting Brackets	0000000	00000	00000000	00000
		7 3/4"	3 3/4"	10 5/16"	6 5/8"	0.07"	Surface	Yes	1/4"	Yes	NEMA 3R	CSA Certified, UL Recognized Component	One Aluminum Mesh Filter, Two Mounting Brackets	0000000	00000	00000000	00000
		7 3/4"	6 1/4"	10 5/16"	9"	0.07"	Surface	Yes	1/4"	Yes	NEMA 3R	CSA Certified, UL Recognized Component	One Aluminum Mesh Filter, Two Mounting Brackets	0000000	00000	00000000	00000
		7 3/4"	8 1/2"	10 5/16"	11 3/8"	0.07"	Surface	Yes	1/4"	Yes	NEMA 3R	CSA Certified, UL Recognized Component	One Aluminum Mesh Filter, Two Mounting Brackets	0000000	00000	00000000	00000
		7 3/4"	13 1/4"	10 5/16"	16 1/8"	0.07"	Surface	Yes	1/4"	Yes	NEMA 3R	CSA Certified, UL Recognized Component	One Aluminum Mesh Filter, Two Mounting Brackets	0000000	00000	00000000	00000