NewAge Products Slate Gray 12-in x 24-in Waterproof Interlocking Luxury Vinyl Tile Flooring (403.2-sq ft/case) in the Vinyl Tile department at Lowes.com
Lifeproof Castle Black Slate 6 MIL x 12 in. W x 24 in. L Click Lock Waterproof Vinyl Tile Flooring (23.8 sqft/case) I584102L - The Home Depot
Tile with IGT Collection Luxury Vinyl Flooring in Slate Tundra | TRUCOR
Armstrong Vinyl Sheet Multicolor Slate Sunset Blue X3522 6 Ft Wide from Floor City your national US flooring supplies distributor. Wholesale prices available