The Model "ND" dry sprinklers from Globe Fire Sprinkler Corp. have been U.L. listed for the 8.1 K-factor style and also for the 3/4-in. NPT style. The approval applies to the 5.6 K-factor in the 1-in. NPT and the new 3/4-in. NPT, while the 8.1 K-factor is listed in the 1-in. NPT only. The sprinklers are available in pendent, horizontal sidewall, vertical sidewall, concealed pendent and upright styles in quick response and standard. Globe Fire Sprinkler Corp.