To contact your FOSS/Delta Regional Sales Manager, call Delta Customer Service at
or check the Delta Education website at
For the FOSS Third Edition replacement-parts catalog, go to
For the FOSS Second Edition K–6 or middle school replacement-part catalog, go to
Delta Education is the exclusive distributor of the FOSS products. Delta works closely with the Lawrence Hall of Science in the manufacturing of the FOSS program to ensure all components meet the specifications of the FOSS developers.