WARRANTY LIABILITY (Tables)

6 Months Ended

Mar. 31, 2020

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,
	2020			2019			2020			2019
Balance, beginning of period	$	7,344		$	9,041		$	7,894		$	8,174
Warranties issued and changes in estimated pre-existing warranties	4,862			4,700			8,227			8,761
Actual warranty costs incurred	(4,417		)	(5,730		)	(8,332		)	(8,924		)
Balance, end of period	$	7,789		$	8,011		$	7,789		$	8,011