Marshal Chris
Silver Member
Can anyone tell me where I can find at what length range guard would consider a backshelf an obstruction? All the other books, Pyrochem, ansul and the like, all say 11 inches, but I can't find anything in the range guard manual. They have LPR nozzles that can be installed under a shelf, but don't say when the LPR shall be used in place of an R nozzle.
Anyone?
Anyone?