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Inventories
6 Months Ended
Jun. 28, 2025
Inventory Disclosure [Abstract]  
Inventories Inventories
The Corporation’s residential building products inventories, and a majority of its workplace furnishings inventories, are valued at cost, on the "last-in, first-out" (LIFO) basis. Remaining inventories are generally valued at the lower of cost, on the "first-in, first-out" (FIFO) basis, or net realizable value. Inventories included in the Condensed Consolidated Balance Sheets consisted of the following:
June 28,
2025
December 28,
2024
Finished products, net$136.0 $122.4 
Materials and work in process, net131.2 119.5 
LIFO allowance(50.6)(47.5)
Total inventories, net$216.5 $194.3 
Inventory valued by the LIFO costing method96 %91 %
The year-to-date increase in the net inventory balance was driven by seasonality in the workplace furnishings segment.

In addition to the LIFO allowance, the Corporation recorded inventory allowances reducing finished products, materials, and work in process of $11.6 million and $12.1 million as of June 28, 2025 and December 28, 2024, respectively, to adjust for excess and obsolete inventory or otherwise reduce FIFO-basis inventory to net realizable value.