Diameters, Weight, Gauge and Strength Properties of Spiral Duct

All ROLOK Duct Meets ASTM A924, G90 Coating

Diameter (inches)	Weight	Gauge Std	Internal Negative Pressure to Collapse
Diameter (inches)	Weight	Gauge Std	wg	psi
3	0.83	26	*
4	1.08	26	*
5	1.35	26	*
6	1.54	26	238.0	8.59
7	1.79	26	155.0	5.60
8	2.06	26	72.0	2.60
9	2.94	24	174.0	6.28
10	3.26	24	137.0	4.96
11	3.58	24	88.0	3.20
12	3.84	24	62.5	2.26
14	4.46	24	34.0	1.23
16	5.10	24	>32.0	1.15
18	5.73	24	30.0	1.10
20	6.37	24	29.0	1.05
22	7.00	24	28.0	1.01
24	9.45	22	30.0	1.10
26	10.24	22	30.0	1.10
28	11.07	22	29.0	1.08
30	11.86	22	29.0	1.06
32	12.65	22	29.0	1.05
34	13.45	22	28.0	1.03
36	14.22	22	27.0	1.00