Note 8 - Product Warranty

3 Months Ended

Feb. 28, 2018

Notes to Financial Statements

Product Warranty Disclosure [Text Block]

8 ) Product Warranty

The Company offers warranties of various lengths to its customers depending on the specific product and terms of th

e customer purchase agreement. The average length of the warranty period is

one

year from the date of purchase. The Company’s warranties require it to repair or replace defective products during the warranty period at

no

cost to the customer. The Company records a liability for estimated costs that

may

be incurred under its warranties. The costs are estimated based on historical experience and any specific warranty issues that have been identified. Although historical warranty costs have been within expectations, there can be

no

assurance that future warranty costs will

not

exceed historical amounts. The Company periodically assesses the adequacy of its recorded warranty liability and adjusts the balance as necessary. The accrued warranty balance is included in accrued expenses as shown in Note

6

“Accrued Expenses.” Changes in the Company’s product warranty liability for the

three

months ended

February 28, 2018

and

February 28, 2017

are as follows:

	For the three months ended
	February 28, 2018			February 28, 2017
Balance, beginning	$	68,451		$	134,373
Settlements / adjustments		(82,673	)		(72,949	)
Warranties issued		68,357			64,248
Balance, ending	$	54,135		$	125,672