10 YEAR WARRANTY All WT series exhaust fans are warranted to be free from. defective materials and workmanship for the period of tn (10) years from the tads of original purchase. in fhe event that we find any par is defective the promiscuous be repaired or, in fhe Company's discretion, replaced without charge provided this the product his been installed in concordance with the enclosed instructions and all depletion EPA Standards: and state:and local bulling codes.