If units were already manufactured before 11 December 2027 but were not first placed on the market until after that date, are they CRA legacy products?
No.
The Commission FAQ says Union harmonisation legislation, including the CRA, applies to individual products, not abstract product types. It also says only individual products that have been placed on the market before 11 December 2027 escape the full CRA regime. So manufacturing, warehousing, or holding stock before that date is not enough by itself if the unit is first placed on the market on or after 11 December 2027.
Section 7.2 confirms that only individual products placed on the market before 11 December 2027 receive legacy treatment.
Blue Guide sections 2.2 and 2.3 explain why manufacturing or warehousing is not the same as first placing on the market.