Okla. Stat. tit. 36, § 36-4204: Grace period

There shall be a provision that the insured is entitled to a

grace period of four (4) weeks within which the payment of any

premiums after the first may be made, except that in policies the

premiums for which are payable monthly, the period of grace shall be

one (1) month, but not less than thirty (30) days, and that during

the period of grace the policy shall continue in full force, but if

during the grace period the policy becomes a claim, then any overdue

and unpaid premiums may be deducted from any settlement under the

policy.