Roof Intake Duct and Intake Plenum

Galvanized Steel Construction

Model	A	B	C	D
20EL	20	20	28	20
24EL	24	24	32	24
30EL	30	30	38	30
36EL	36	36	44	36
42EL	42	42	50	42
48EL	48	48	56	48
54EL	54	54	62	54
60EL	60	60	68	60
72EL	72	72	80	72

• Models 20 to 48 - fabricated from 22 GA. galvanized steel
• Models 54 to 72 - fabricated from 20 GA. galvanized steel

All dimensions are in inches. Dimensions subject to change without notice.