27 C.F.R. § 22.26
(b) Limitations. Summary detention may not exceed 72 hours without process of law or intervention of the appropriate TTB officer. The person possessing the container immediately before its detention may prepare a waiver of the 72 hours limitation to have the container kept on its premises during detention.
(Sec. 201, Pub. L. 85-859, 72 Stat. 1375, as amended (26 U.S.C. 5311))
[T.D. ATF-199, 50 FR 9183, Mar. 6, 1985. Redesignated by T.D. ATF-443, 66 FR 13015, Mar. 2, 2001]