The consumer goods repair dealer shall deliver to the customer in the container in which a new part was packed any part replaced by that new part, unless the customer expressly waives this requirement by so indicating on the written estimate as provided in §§ 633 and 634.
Exhibit and tender of a replaced part to the customer is sufficient in the following circumstances:
D.C. Mun. Regs. tit. 16, r. 16-636