Duct Line, Insulation Jacketing

Technical Specification

CFM is the acronym for Cubic Feet per Minute -the measure of air volume moved by the fan blower. Choose a fan with a CFM rating appropriate for your room size to ensure adequate ventilation.

This was when you had a En’tech Engineering hire by the Warehouse and he came out and size the unit and done duct calculation for you.

Discharge Duct sizes per CFM Flex.

4″        40 cfm

5″        60 cfm

6″         100 cfm

7″        150 cfm

8″        200 cfin

9″         300 cfm

10″      400 cfm

1 2″      600 cfm

1 4″      900 cfm

1 6″       1,400 cfm

18″      1,800 cfm

20″       2,300 cfm

Return Duct sizes Per CFM Flex

12″       800 cfm

14″       1,200 cfm

16″       1,500 cfm

18″      2,000 cfm

20″      2,400 cfm

Tonage Per CFM

5 ton     2,000 cfm

4 ton    1,600 cfm

3.5 ton  1,400 cfm 3 ton 1,200 cfm

2.5 ton  1,000 cfm 2 ton 800 cfm

1.5 ton 600 cfm

“ We are confident to make you a very happy and satisfied customer. ”