WARRANTY LIABILITY (Tables)

6 Months Ended

Mar. 31, 2022

Product Warranties Disclosures [Abstract]

Summary of Changes in Warranty Liability, Included in Accrued Liabilities

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

	Three Months Ended March 31,				Six Months Ended March 31,
	2022		2021		2022		2021
Balance, beginning of period	$	9,572	$	6,232	$	7,818	$	6,268
Warranties issued and changes in estimated pre-existing warranties	5,788		4,933		9,249		8,509
Actual warranty costs incurred	(3,755)		(3,245)		(5,462)		(6,857)
Other warranty liabilities assumed from acquisitions	6,353		—		6,353		—
Balance, end of period	$	17,958	$	7,920	$	17,958	$	7,920