Angle Rings for Exhaust Fans

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Duct Size

Flange Mount Type

Number of Mounting Holes

Flange Thickness

Flange Height

With Mounting Holes

Overall Depth

Mounting Hole Diameter

9/32"

3/8"

7/16"

Export Control Classification Number (ECCN)

Depth

REACH

RoHS

DFARS Specialty Metals

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62 Products

Duct Flanges


With Mounting Holes	Without Mounting Holes	Without Mounting Holes	With Mounting Holes

Mount flanges to air handlers and HVAC equipment to start a run of duct. They also create a secure joint between sections of duct—attach a flange to each piece. Also known as angle rings.

With Mounting Holes—Ready to install, these flanges secure with screws.

Without Mounting Holes—Drill your own holes or weld into place.

Steel—Strong for a long life, these steel flanges can be painted or coated. Unless it’s finished, steel is best for dry environments.

				Flange		Mounting
	Duct Size	ID	Overall Dp.	Ht.	Thk.	Fasteners Included	No. of Holes	Hole Dia.		Each
With Mounting Holes







				Steel

				3	3 1/16"	1"	1"	1/8"	No	6	9/32"	0000000	00000


				3 1/2	3 9/16"	1"	1"	9/64"	No	6	9/32"	0000000	00000
				4	4 1/16"	1"	1"	1/8"	No	6	9/32"	0000000	00000
				4 1/2	4 9/16"	1"	1"	9/64"	No	6	9/32"	0000000	00000
				5	5 1/16"	1"	1"	1/8"	No	6	9/32"	0000000	00000
				5 1/2	5 9/16"	1"	1"	9/64"	No	6	9/32"	0000000	00000
				6	6 1/8"	1 1/4"	1 1/4"	1/8"	No	6	3/8"	0000000	00000
				7	7 1/8"	1 1/4"	1 1/4"	1/8"	No	6	3/8"	0000000	00000
				8	8 1/8"	1 1/4"	1 1/4"	1/8"	No	6	3/8"	0000000	00000
				9	9 1/8"	1 1/4"	1 1/4"	1/8"	No	6	3/8"	0000000	00000
				10	10 1/8"	1 1/4"	1 1/4"	1/8"	No	6	3/8"	0000000	00000


				11	11 1/8"	1 1/4"	1 1/4"	1/8"	No	6	3/8"	0000000	00000
				12	12 1/8"	1 1/2"	1 1/2"	1/8"	No	8	7/16"	0000000	00000
				13	13 1/8"	1 1/2"	1 1/2"	1/8"	No	8	7/16"	0000000	00000
				14	14 1/8"	1 1/2"	1 1/2"	1/8"	No	8	7/16"	0000000	00000
				15	15 1/8"	1 1/2"	1 1/2"	1/8"	No	8	7/16"	0000000	00000
				16	16 1/8"	1 1/2"	1 1/2"	3/16"	No	8	7/16"	0000000	00000
				17	17 1/8"	1 1/2"	1 1/2"	3/16"	No	8	7/16"	0000000	00000
				18	18 1/8"	1 1/2"	1 1/2"	3/16"	No	8	7/16"	0000000	00000
				19	19 1/8"	1 1/2"	1 1/2"	3/16"	No	12	7/16"	00000000	00000
				20	20 1/8"	1 1/2"	1 1/2"	3/16"	No	12	7/16"	0000000	00000


				21	21 1/8"	1 1/2"	1 1/2"	3/16"	No	12	7/16"	0000000	00000
				22	22 1/8"	1 1/2"	1 1/2"	3/16"	No	12	7/16"	0000000	00000
				23	23 1/8"	1 1/2"	1 1/2"	3/16"	No	12	7/16"	0000000	00000
				24	24 1/8"	1 1/2"	1 1/2"	3/16"	No	12	7/16"	0000000	00000
				25	25 1/8"	1 1/2"	1 1/2"	3/16"	No	16	7/16"	0000000	00000
				26	26 1/8"	2"	2"	3/16"	No	16	7/16"	0000000	00000
				27	27 1/8"	2"	2"	3/16"	No	16	7/16"	0000000	00000
				28	28 1/8"	2"	2"	3/16"	No	16	7/16"	0000000	00000
				29	29 1/8"	2"	2"	3/16"	No	16	7/16"	0000000	00000
				30	30 1/8"	2"	2"	3/16"	No	16	7/16"	0000000	00000


				32	32 1/8"	2"	2"	3/16"	No	16	7/16"	0000000	00000
				34	34 1/8"	2"	2"	3/16"	No	16	7/16"	0000000	00000
				36	36 1/8"	2"	2"	3/16"	No	16	7/16"	00000000	00000
				38	38 1/8"	2"	2"	3/16"	No	24	7/16"	00000000	00000
				40	40 1/8"	2"	2"	3/16"	No	24	7/16"	00000000	000000
				42	42 1/8"	2"	2"	3/16"	No	24	7/16"	00000000	000000
				44	44 1/8"	2"	2"	3/16"	No	24	7/16"	00000000	000000
				46	46 1/8"	2"	2"	3/16"	No	24	7/16"	00000000	000000
				48	48 1/8"	2"	2"	3/16"	No	24	7/16"	00000000	000000
				52	52 1/8"	2"	2"	3/16"	No	24	7/16"	00000000	000000


				Without Mounting Holes







						Steel

		3	3 1/16"			1"	1"	1/8"	—	—	—	0000000	0000


		4	4 1/16"			1"	1"	1/8"	—	—	—	0000000	00000
		5	5 1/16"			1"	1"	1/8"	—	—	—	0000000	00000
		6	6 1/8"			1 1/4"	1 1/4"	1/8"	—	—	—	0000000	00000
		7	7 1/8"			1 1/4"	1 1/4"	1/8"	—	—	—	0000000	00000
		8	8 1/8"			1 1/4"	1 1/4"	1/8"	—	—	—	0000000	00000
		9	9 1/8"			1 1/4"	1 1/4"	1/8"	—	—	—	0000000	00000
		10	10 1/8"			1 1/4"	1 1/4"	1/8"	—	—	—	0000000	00000
		11	11 1/8"			1 1/4"	1 1/4"	1/8"	—	—	—	0000000	00000
		12	12 1/8"			1 1/2"	1 1/2"	1/8"	—	—	—	0000000	00000
		13	13 1/8"			1 1/2"	1 1/2"	1/8"	—	—	—	0000000	00000


		14	14 1/8"			1 1/2"	1 1/2"	1/8"	—	—	—	0000000	00000
		15	15 1/8"			1 1/2"	1 1/2"	1/8"	—	—	—	0000000	00000
		16	16 1/8"			1 1/2"	1 1/2"	3/16"	—	—	—	0000000	00000
		18	18 1/8"			1 1/2"	1 1/2"	3/16"	—	—	—	0000000	00000
		20	20 1/8"			1 1/2"	1 1/2"	3/16"	—	—	—	0000000	00000
		22	22 1/8"			1 1/2"	1 1/2"	3/16"	—	—	—	0000000	00000
		24	24 1/8"			1 1/2"	1 1/2"	3/16"	—	—	—	0000000	00000
		26	26 1/8"			2"	2"	3/16"	—	—	—	0000000	00000
		28	28 1/8"			2"	2"	3/16"	—	—	—	0000000	00000
		30	30 1/8"			2"	2"	3/16"	—	—	—	0000000	00000