IES RP-2-17 provides an in-depth discussion of the system and the criteria essential to lighting merchandise displays in a variety of retail applications. Specifically, lighting quality metrics appear in Tables 1 and 2. Horizontal and vertical illuminance, along with uniformity recommendations, can be viewed in Tables 3 and 4. This Recommended Practice was written for designers with varying levels of experience in retail lighting design. The study of RP-2-17, including the references and annexes found at the back, should serve as a foundation for good retail and merchandise lighting. Various energy codes are referenced in this document.