R20 incandescent reflector lamp

(57) R20 incandescent reflector lamp .— The term “R20 incandescent reflector lamp” means a reflector lamp that has a face diameter of approximately 2.5 inches, as shown in figure 1(R) on page 7 of ANSI C79.1–1994.

Source

42 USC § 6291(57)

Scoping language

For purposes of this part