### Question
How is the "TDA" defined?


### Answer
The term **TDA** is defined in *42 U.S.C. § 6313* as follows -

> the total display area (ft[2](#6313_2_target)) of the refrigerated case, as defined in AHRI Standard 1200

#### Citation:
  - *42 U.S.C. § 6313*
  - Heading: **CHAPTER 77-ENERGY CONSERVATION > SUBCHAPTER III-IMPROVING ENERGY EFFICIENCY > Part A&ndash;1-Certain Industrial Equipment**

