3-5/8 wide and 4 tall these sample chips are the perfect size for submittals and getting a feel for the look and color of a product. Natural Flat Grain unfinished bamboo flooring readily captures the natural aesthetic of bamboo adding a traditional touch to any environment. Flat Grain flooring is Smith Fong Bamboo Pure (made with no added formaldehyde) and FloorScore certified and FSC Pure (100% FSC certified).