Wash. Admin. Code § 230-16-075
(2) Manufacturers may package progressive jackpot pull-tab series in more than one container if they:
(b) Identically label each box with a referencing system that identifies, at least:
(c) Mark cases to identify the contents during shipping, including:
[Statutory Authority: RCW 9.46.070. WSR 07-19-069 (Order 615), § 230-16-075, filed 9/17/07, effective 1/1/08.]