WARRANTY LIABILITY (Tables)

12 Months Ended

Sep. 30, 2020

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,
	2020			2019
Balance, beginning of period	$	7,894		$	8,174
Warranties issued and changes in estimated pre-existing warranties	20,474			16,938
Actual warranty costs incurred	(17,525		)	(17,218		)
Balance, end of period	$	10,843		$	7,894