BUILDING CLEANING AND MAINTENANCE 
SERVICES, N.E.C. (SIC 7349)

Establishments primarily engaged in furnishing building cleaning
and maintenance services, not elsewhere classified, such as
window cleaning, janitorial services, floor waxing, and office
cleaning. General contractors and special trade contractors
primarily engaged in building repair work, cleaning building
exteriors by sand or steam blasting, or cleaning up after
construction are classified in Construction.