NSN Space And Water Heating Equipment Catalog - Page 263

FSC 4520 Includes boilers, 15 pounds wsp and under (for boilers over 15 pounds wsp, see fsc 4410); domestic water storage tanks through 100 gallon capacity; fireplace heaters; furnaces; space heaters; heating radiators; immersion heaters; water heaters, through 100 gallon recovery capacity (for heaters over 100 gallons recovery capacity, see fsc 4410).