Product Profile of Air Duct Calculator

Airserco`s air duct calculator 5125 is a special type pocket-size calculator which uses only three slides to give all the information needed when figuring the sizes of air ducts. Convenient tables printed on the back of the calculator supply additional data in a handy, easy-to-use form. The few words of instruction needed to understand and use the different slides are printed on the calculator face, where they cannot be lost or mislaid. Air duct calculator 5125 is used to determine:

• Size of air ducts by the equal pressure loss method

• Size of round ducts vs. Rectangular ducts

• Weight per foot of round ducts by u.S.S. Gauge

• Weight per foot of rectangular ducts by u.S.S. Gauge

• Recommended duct velocities

• Friction loss of 1-1/2 radius elbows

• Gauge of metal for size of ducts