Angle Rings for Exhaust Fans

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Duct Size

Flange Mount Type

With Mounting Holes

Number of Mounting Holes

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Flange Thickness

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Mounting Hole Diameter

Depth

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

Export Control Classification Number (ECCN)

EAR99

RoHS

Compliant

REACH

Not Compliant

DFARS Specialty Metals

Exempt

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62 Products

Duct Flanges


With Mounting Holes	With Mounting Holes	Without Mounting Holes	Without 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"	1764K41	00000


				3 1/2	3 9/16"	1"	1"	9/64"	No	6	9/32"	1764K84	00000
				4	4 1/16"	1"	1"	1/8"	No	6	9/32"	1764K42	00000
				4 1/2	4 9/16"	1"	1"	9/64"	No	6	9/32"	1764K85	00000
				5	5 1/16"	1"	1"	1/8"	No	6	9/32"	1764K43	00000
				5 1/2	5 9/16"	1"	1"	9/64"	No	6	9/32"	1764K86	00000
				6	6 1/8"	1 1/4"	1 1/4"	1/8"	No	6	3/8"	1764K11	00000
				7	7 1/8"	1 1/4"	1 1/4"	1/8"	No	6	3/8"	1764K12	00000
				8	8 1/8"	1 1/4"	1 1/4"	1/8"	No	6	3/8"	1764K23	00000
				9	9 1/8"	1 1/4"	1 1/4"	1/8"	No	6	3/8"	1764K25	00000
				10	10 1/8"	1 1/4"	1 1/4"	1/8"	No	6	3/8"	1764K27	00000


				11	11 1/8"	1 1/4"	1 1/4"	1/8"	No	6	3/8"	1764K88	00000
				12	12 1/8"	1 1/2"	1 1/2"	1/8"	No	8	7/16"	1764K32	00000
				13	13 1/8"	1 1/2"	1 1/2"	1/8"	No	8	7/16"	1764K34	00000
				14	14 1/8"	1 1/2"	1 1/2"	1/8"	No	8	7/16"	1764K37	00000
				15	15 1/8"	1 1/2"	1 1/2"	1/8"	No	8	7/16"	1764K38	00000
				16	16 1/8"	1 1/2"	1 1/2"	3/16"	No	8	7/16"	1764K39	00000
				17	17 1/8"	1 1/2"	1 1/2"	3/16"	No	8	7/16"	1764K87	00000
				18	18 1/8"	1 1/2"	1 1/2"	3/16"	No	8	7/16"	1764K44	00000
				19	19 1/8"	1 1/2"	1 1/2"	3/16"	No	12	7/16"	1764K991	00000
				20	20 1/8"	1 1/2"	1 1/2"	3/16"	No	12	7/16"	1764K45	00000


				21	21 1/8"	1 1/2"	1 1/2"	3/16"	No	12	7/16"	1764K89	00000
				22	22 1/8"	1 1/2"	1 1/2"	3/16"	No	12	7/16"	1764K46	00000
				23	23 1/8"	1 1/2"	1 1/2"	3/16"	No	12	7/16"	1764K91	00000
				24	24 1/8"	1 1/2"	1 1/2"	3/16"	No	12	7/16"	1764K47	00000
				25	25 1/8"	1 1/2"	1 1/2"	3/16"	No	16	7/16"	1764K92	00000
				26	26 1/8"	2"	2"	3/16"	No	16	7/16"	1764K48	00000
				27	27 1/8"	2"	2"	3/16"	No	16	7/16"	1764K93	00000
				28	28 1/8"	2"	2"	3/16"	No	16	7/16"	1764K49	00000
				29	29 1/8"	2"	2"	3/16"	No	16	7/16"	1764K94	00000
				30	30 1/8"	2"	2"	3/16"	No	16	7/16"	1764K63	00000


				32	32 1/8"	2"	2"	3/16"	No	16	7/16"	1764K96	00000
				34	34 1/8"	2"	2"	3/16"	No	16	7/16"	1764K98	00000
				36	36 1/8"	2"	2"	3/16"	No	16	7/16"	1764K101	00000
				38	38 1/8"	2"	2"	3/16"	No	24	7/16"	1764K103	00000
				40	40 1/8"	2"	2"	3/16"	No	24	7/16"	1764K105	000000
				42	42 1/8"	2"	2"	3/16"	No	24	7/16"	1764K107	000000
				44	44 1/8"	2"	2"	3/16"	No	24	7/16"	1764K109	000000
				46	46 1/8"	2"	2"	3/16"	No	24	7/16"	1764K112	000000
				48	48 1/8"	2"	2"	3/16"	No	24	7/16"	1764K114	000000
				52	52 1/8"	2"	2"	3/16"	No	24	7/16"	1764K118	000000


				Without Mounting Holes







						Steel

		3	3 1/16"			1"	1"	1/8"	—	—	—	1764K81	0000


		4	4 1/16"			1"	1"	1/8"	—	—	—	1764K82	00000
		5	5 1/16"			1"	1"	1/8"	—	—	—	1764K83	00000
		6	6 1/8"			1 1/4"	1 1/4"	1/8"	—	—	—	1764K51	00000
		7	7 1/8"			1 1/4"	1 1/4"	1/8"	—	—	—	1764K52	00000
		8	8 1/8"			1 1/4"	1 1/4"	1/8"	—	—	—	1764K53	00000
		9	9 1/8"			1 1/4"	1 1/4"	1/8"	—	—	—	1764K54	00000
		10	10 1/8"			1 1/4"	1 1/4"	1/8"	—	—	—	1764K55	00000
		11	11 1/8"			1 1/4"	1 1/4"	1/8"	—	—	—	1764K56	00000
		12	12 1/8"			1 1/2"	1 1/2"	1/8"	—	—	—	1764K57	00000
		13	13 1/8"			1 1/2"	1 1/2"	1/8"	—	—	—	1764K58	00000


		14	14 1/8"			1 1/2"	1 1/2"	1/8"	—	—	—	1764K59	00000
		15	15 1/8"			1 1/2"	1 1/2"	1/8"	—	—	—	1764K61	00000
		16	16 1/8"			1 1/2"	1 1/2"	3/16"	—	—	—	1764K62	00000
		18	18 1/8"			1 1/2"	1 1/2"	3/16"	—	—	—	1764K64	00000
		20	20 1/8"			1 1/2"	1 1/2"	3/16"	—	—	—	1764K66	00000
		22	22 1/8"			1 1/2"	1 1/2"	3/16"	—	—	—	1764K68	00000
		24	24 1/8"			1 1/2"	1 1/2"	3/16"	—	—	—	1764K71	00000
		26	26 1/8"			2"	2"	3/16"	—	—	—	1764K73	00000
		28	28 1/8"			2"	2"	3/16"	—	—	—	1764K75	00000
		30	30 1/8"			2"	2"	3/16"	—	—	—	1764K76	00000