Sales by Product Group (Tables)

12 Months Ended

Dec. 30, 2017

Segment Reporting [Abstract]

Summary of Sales by Product Group

Sales by product group are as follows:

	Year Ended
	December 30,		December 31,		January 2,
(in millions)	2017		2016		2016
Product category:
Impact-resistant window and door products	$	433.4	$	381.6	$	319.2
Non-impact window and door products		77.7		77.0		70.6
Total net sales (1)	$	511.1	$	458.6	$	389.8