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With the exception of wedding gifts, bride's trousseau, alcoholic beverages and tobacco products described in the Tariff Item No. 9807.00.00 Exemption Order, all household and personal effects imported or to be imported must have actually been owned, possessed, and used abroad by you prior to the date of your arrival in Canada.
When goods to follow arrive, they will be released to you when you present CBSA a copy of the original Form B4. The customs inspector will initial beside the items being released and date-stamp the form.
Only goods that were declared and listed as goods to follow on your original Form B4 are eligible for duty- and tax-free importation at a later time. There is no time limit for importing goods to follow that were listed on your Form B4.