WARRANTY LIABILITY (Tables)

6 Months Ended

Mar. 31, 2023

Product Warranties Disclosures [Abstract]

Summary of Changes in Warranty Liability, Included in Accrued Liabilities

Changes in Griffon’s warranty liability for the three and six months ended March 31, 2023 and 2022 were as follows:

	Three Months Ended March 31,				Six Months Ended March 31,
	2023		2022		2023		2022
Balance, beginning of period	$	18,939	$	9,572	$	18,026	$	7,818
Warranties issued and changes in estimated pre-existing warranties	6,413		5,788		11,080		9,249
Actual warranty costs incurred	(4,011)		(3,755)		(7,765)		(5,462)
Other warranty liabilities assumed from acquisitions	—		7,592		—		7,592
Balance, end of period	$	21,341	$	19,197	$	21,341	$	19,197