Where the surface is less than 3.9 by 7.8 inches, the metal foil shall be the same size as the surface. The metal foil shall not remain in place long enough to affect the temperature of the unit.
Where the surface is less than 3.9 by 7.8 inches, the metal foil shall be the samesize as the surface. The metal foil shall not remain in place long enough to affect the temperature of theunit.