If a contract is issued on any basis other than as applied for, an endorsement setting forth such modification(s) must accompany and be attached to the policy; and no endorsement shall be effective unless signed by the policyowner, and a signed copy thereof returned to the insurer.
RCW 48.20.015
Severability-1975 1st ex.s. c 266: See note following RCW 48.01.010.