20 After 4 is a licensed marijuana dispensary in the county of Cowlitz, WA and in the city of Kelso, WA. For more information on I-502, please visit the Washington State Liquor Control Board website here. You must be 21 years of age to enter 20 After 4. This product has intoxication effects and may be habit-forming. Marijuana can impair concentration, coordination and judgement. Do not operate motor vehicles or machinery under the influence of this drugs. There are many health risks associated with the consumption of this product. Marijuana products are for use by adults 21 years of age and older. Keep out of reach of children.