FSC 4510

Includes Bathtubs; Commodes; Lavatories; Shower Cabinets; Sinks; Water Closets; Accessories and Component Parts, such as Dispensers, Faucets, Holders, Racks, Shower Heads, Flush Valves and Stop Valves.
Excludes Fittings and Specialties for Hose, Pipe and Tube (FSC 4730).

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).
Excludes Vehicle Heaters; (FSC 2540); Aircraft Heaters (FSC 1660).

FSC 4530

Includes Oil Burners; Stokers; Gas Burners.

FSC 4540

Includes Compactors; Destructors; Garbage Disposals; Incinerators; Septic Tanks.