Specific Positioning Criteria refers to guidelines for sprinkler placement per listing.

• A. Length from fitting to insulation or wall.
• B. Minimum lengths for dry sprinklers.
• C. Guidelines for sprinkler placement per listing.
• D. Deflector positioning.

Answer: (D)

Specific Positioning Criteria is about how the sprinkler’s spray is shaped and directed by the deflector to meet the manufacturer's listed performance. The deflector is what creates the discharge pattern and, in turn, the coverage area. Listing requirements specify exact ways the deflector must be oriented and positioned (such as its height, angle, and alignment relative to ceilings and obstructions) to achieve the intended spray distribution. When you follow these criteria, the sprinkler delivers the designed coverage, and deviations can leave gaps or cause over-spray.

The other options touch on installation clearances or pipe characteristics, which aren’t about the listing-driven control of the spray pattern. A general guideline for placement per listing exists, but the term in question specifically points to how the deflector’s position governs the listed performance.