Section 1260.3 - Prohibited stockpiling(a)Prohibited acts. Manufacturers and importers of custom window coverings shall not manufacture or import custom window coverings that do not comply with the requirements of this part in any 180-day period between November 28, 2022, and May 30, 2023, at a rate that is greater than 120 percent of the rate at which they manufactured or imported custom window coverings during the base period for the manufacturer.(b)Base period. The base period for custom window coverings is any period of 180 consecutive dates, chosen by the manufacturer or importer, in the 5-year period immediately preceding November 28, 2022.