WARRANTY LIABILITY

12 Months Ended

Sep. 30, 2019

Product Warranties Disclosures [Abstract]

Defense Electronics offers warranties against product defects for periods generally ranging from one to two years, depending on the specific product and terms of the customer purchase agreement. HBP also offers warranties against product defects for periods generally ranging from one to ten years, with limited lifetime warranties on certain door models. Typical warranties require CPP, HBP and Defense Electronics to repair or replace the defective products during the warranty period at no cost to the customer. At the time revenue is recognized, Griffon records a liability for warranty costs, estimated based on historical experience, and periodically assesses its warranty obligations and adjusts the liability as necessary. CPP offers an express limited warranty for a period of ninety days on all products from the date of the original purchase unless otherwise stated on the product or packaging from the date of original purchase.

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



	Years Ended September 30,
	2019			2018
Balance, beginning of period	$	8,174		$	6,236
Warranties issued and changes in estimated pre-existing warranties	16,938			8,770
Actual warranty costs incurred	(17,218		)	(7,948		)
Other warranty liabilities assumed from acquisitions	$	—		$	1,116
Balance, end of period	$	7,894		$	8,174