Description
The Reliable Model N28T6 and N28T3 sprinklers are Early Suppression Fast Response (ESFR) sprinklers with a nominal K-factor of 28.0 (400 metric). The sprinklers use a fusible alloy solder link with a 212°F (100°C) temperature rating.
Model N28T6 and N28T3 sprinklers are cULus Listed Specific Application sprinklers for the protection of Class I-IV commodity and cartoned unexpanded Group A plastic storage in accordance with the guidelines in Table D. This includes palletized, solid piled, and open frame single-, double-, and multiple-row and portable rack arrangements in accordance with the 2022 edition of NFPA 13. The cULus Listed Specific Application Design criteria is for protection of storage up to 43 ft (13.1 m) tall under ceiling heights up to 48 ft (14.6 m). A minimum aisle width as narrow as 4 ft (1.2 m) is permitted.
In addition, the cULus Specific Application Listing for the Model N28T3 sprinkler permits open frame single- and double-row rack storage having transverse flue spaces with a minimum width of 3in (75 mm).