Straight Ducts

Oval Cut Duct (<10’) [<3m] length

ATS Part Type #305

Oval Duct 10’ [3m] length

ATS Part Type #310

Nominal Width		Height		Wall Thickness			Bow in Height		O.D. Width		Actual Height
in	mm	in	mm	in	in	mm	in	mm	in	mm	in	mm
2	50	*	*	0.19	3/16	5	1/4	6	2 3/8	60	+	+
3	75	*	*	0.19	3/16	5	1/4	6	3 3/8	86	+	+
4	100	*	*	0.19	3/16	5	1/4	6	4 3/8	111	+	+
6	150	*	*	0.19	3/16	5	1/4	6	6 3/8	162	+	+
8	200	*	*	0.19	3/16	5	1/4	6	8 3/8	213	+	+
10	250	*	*	0.19	3/16	5	1/4	6	10 3/8	264	+	+
12	300	*	*	0.19	3/16	5	1/4	6	12 3/8	314	+	+
14	350	*	*	0.19	3/16	5	1/2	13	14 3/8	365	+	+
16	400	*	*	0.19	3/16	5	1/2	13	16 3/8	416	+	+
18	450	*	*	0.25	1/4	6	1/2	13	18 1/2	470	+	+
20	500	*	*	0.25	1/4	6	1/2	13	20 1/2	521	+	+
22	550	*	*	0.25	1/4	6	1/2	13	22 1/2	572	+	+
24	600	*	*	0.25	1/4	6	1/2	13	24 1/2	622	+	+
26	650	*	*	0.31	5/16	8	3/4	19	26 5/8	676	+	+
28	700	*	*	0.31	5/16	8	3/4	19	28 5/8	727	+	+
30	750	*	*	0.31	5/16	8	3/4	19	30 5/8	778	+	+
32	800	*	*	0.31	5/16	8	3/4	19	32 5/8	829	+	+
34	850	*	*	0.31	5/16	8	3/4	19	34 5/8	879	+	+
36	900	*	*	0.31	5/16	8	3/4	19	36 5/8	930	+	+
38	950	*	*	0.31	5/16	8	1	25	38 5/8	981	+	+
40	1000	*	*	0.31	5/16	8	1	25	40 5/8	1032	+	+
42	1050	*	*	0.38	3/8	10	1	25	42 3/4	1086	+	+
44	1100	*	*	0.38	3/8	10	1	25	44 3/4	1137	+	+
46	1150	*	*	0.38	3/8	10	1	25	46 3/4	1187	+	+
48	1200	*	*	0.38	3/8	10	1	25	48 3/4	1238	+	+
50	1250	*	*	0.38	3/8	10	1 1/4	32	50 3/4	1289	+	+
52	1300	*	*	0.38	3/8	10	1 1/4	32	52 3/4	1340	+	+
54	1350	*	*	0.38	3/8	10	1 1/4	32	54 3/4	1391	+	+
60	1500	*	*	0.38	3/8	10	1 1/4	32	60 3/4	1543	+	+
68	1700	*	*	0.38	3/8	10	1 1/2	38	68 3/4	1746	+	+
72	1800	*	*	0.44	7/16	11	1 1/2	38	72 7/8	1851	+	+
84	2100	*	*	0.44	7/16	11	1 1/2	38	84 7/8	2156	+	+
120	3000	*	*	0.44	7/16	11	1 1/2	38	120 7/8	3070	+	+

+To calculate the actual O.D. dimensions of an Oval Duct:
I.D. Width + (2 X Thickness) = O.D. Width
I.D. Height + (2 X Thickness) + (2 X Bow) = O.D. Height
EXAMPLE: 74” X 24” Oval:
74” I.D. Width + (2 X 7/16” Thickness) = 74 7/8” O.D. Width
24” Height + (2 X 7/16” Thickness) + (2 X 1 1/2” Bow) = 27 7/8”

* Specified by Customer

*This dimension must be less than or equal to width.