SPI

lumber; laminated wood, milled wood and milled wood products; namely, door frames, jambs, stiles, louvres, stops, trims, blanks, cutstocks, flitches, moldings and brick moldings, windows and frames, sashes and parts therefor, casement frames, [ warehouse frames ] and related frames, panelling and substrates all for use in general construction and as building materials sold in all grades and size designations