Amazon.com: American Floor Mats - Horse/Stable Mats - Heavy Duty Stall Mats - Thick, Durable Rubber Flooring Solid Black 1/2" Thick - 4' x 6' Mat : Pet Supplies
4 ft. x 6 ft. Thick Rubber Stall Mat at Tractor Supply Co.
Stall Mats - Amberway Equine
Installing Rubber Stall Mats – The Horse
Tru-Stall One Piece Stable Flooring Mat 10' x 10' | Schneiders