WARRANTY LIABILITY (Tables)

12 Months Ended

Sep. 30, 2021

Product Warranties Disclosures [Abstract]

Schedule of Product Warranty Liability

Changes in Griffon’s warranty liability, included in Accrued liabilities, were as follows:

	Years Ended September 30,
	2021		2020
Balance, beginning of period	$	6,268	$	2,814
Warranties issued and changes in estimated pre-existing warranties	15,560		16,291
Actual warranty costs incurred	(14,010)		(12,837)
Balance, end of period	$	7,818	$	6,268