Calculator - Tongue Groove - Allpine Lumber Feet = $ 1 x 8 Spruce TG Board Feet = $ 1 x 6 Doug Fir TG Board Feet = $ 1 x 4 Fir Flooring TG Board Feet = $ 1 x 6 Fir Flooring TG Board Feet = $ Calculator is for reference only.** Bundle discount not included. Tongue And Groove Flooring Calculator - Wpc) Deck Flooring tongue and groove flooring calculator. Shanghai Seven Trust Industry Co.,Ltd company is the best wood plastic composite producers and suppliers. Flooring Calculator - South Pacific Timber NZ Matai.