The monthly PPI for flat glass in the commodity category was unchanged after a slight 0.2-percent decrease in May and no change in April. Those prices were up just 0.4 percent from a year ago and continue to level out on year-over-year basis.

According to the BLS, the commodity classification “organizes products and services by similarity or material composition, regardless of the industry classification of the producing establishment.”

The index for flat glass manufacturing in the industry classification was also unchanged from May, and those prices have increased 1.6 percent from June 2016.

The industry classification measures “changes in prices received for the industry’s output sold outside the industry (that is, its net output).”

The cost of thermoplastic resins and plastic materials fell 2.4 percent since May, and are up 7.1 percent from last year. Prices for thermosetting resins and plastic materials fell 0.3 percent since May, but are up 3.6 percent since 2016. Fiberglass plastic product prices fell 1.4 percent since last month.

Prices for wood window units were unchanged from May and are up 2 percent since May 2016. Prices for wood doors for interior and exterior applications rose 1.8 percent during the past month. They’re up 6.4 percent since last year. Metal windows rose 0.1 percent from May’s reading, and metal doors and frames climbed 0.4 percent.

Wood mouldings are up 1.1 percent from last June and 0.6 percent from May.

The cost of builders’ hardware, which includes hardware used in doors and windows, increased 0.2 percent  from May. It’s up 2.3 percent for the year.

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