Tyco adds two new fire sprinklers for use in horizontal combustible concealed spaces – the CC3 combustible concealed spaces sprinkler available in 4.2 and 5.6 K-Factor listings. The 4.2 K-Factor unit has a 196-sq.-ft. maximum coverage area while the 5.6 reaches up to 256 sq. ft. They are manufactured with a temperature rating of 200° F and are intended to be for installation with BlazeMaster CPVC wet pipe systems as well as with steel wet pipe or dry pipe systems. Tyco Fire Protection Products.