### Question
What is the definition of small duct, high velocity system?


### Answer
The definition of **small duct, high velocity system** is as follows in *42 U.S.C. § 6295*:

> a heating and cooling product that contains a blower and indoor coil combination that—


(I) is designed for, and produces, at least 1.2 inches of external static pressure when operated at the certified air volume rate of 220–350 CFM per rated ton of cooling

#### Citation:
  - *42 U.S.C. § 6295*
  - Heading: **CHAPTER 77-ENERGY CONSERVATION > SUBCHAPTER III-IMPROVING ENERGY EFFICIENCY > Part A-Energy Conservation Program for Consumer Products Other Than Automobiles**

