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. Luminous Grey prefinished edge grain bamboo flooring brings to mind the iridescence of morning fog and would be a unique addition to any environment. Luminous Grey flooring is Smith Fong Bamboo Pure (made with no added formaldehyde) and is FloorScore and FSC Pure (100% FSC certified).