Revenue

9 Months Ended

Sep. 30, 2021

Revenue [Abstract]

Revenue

3. REVENUE

The following table summarizes the percentages of our net sales attributable to each of our vertical markets for the three and nine months ended September 30, 2021 and 2020:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2021		2020		2021		2020
Construction	59.1	%	58.4	%	58.7	%	58.1	%
CIG	25.5		27.0		25.7		26.9
Industrial & Utility	15.4		14.6		15.6		15.0
Total net sales	100.0	%	100.0	%	100.0	%	100.0	%

Certain reclassifications have been made to the vertical market assigned to customers in the prior year’s information to conform to the September 30, 2021 presentation.

We had no material contract assets, contract liabilities, or deferred contract costs recorded on the condensed consolidated balance sheet as of September 30, 2021 and December 31, 2020. In addition, for the three and nine months ended September 30, 2021 and 2020, revenue recognized in the reporting period that was included in the contract liability balance at the beginning of the period is not material.

Revenue expected to be recognized in any future year related to remaining performance obligations is not material. As permitted in ASC Topic 606, “Revenue from Contracts with Customers”, we have elected to omit disclosure related to performance obligations for revenue pertaining to contracts that have an original expected duration of one year or less, to contracts where revenue is recognized as invoiced and to contracts with variable consideration related to wholly unsatisfied performance obligations.