Supporting coverage areas up to 16 ft², Model VK479 is suited for residential systems where available water supply is limited. Unit has ½ in. NPT thread size and temperature rating of 155°F. In addition to several standard finishes, durable ENT plating is available, which is cULus Listed for use in areas subject to corrosion. When used in combination with larger K-factor sprinklers, 3.0 K-factor model can help limit over-discharge into adjacent small areas such as entryways and bathrooms.