$29.99 Rubber Floor Mats 4' x 6' x 3/4" - Second Quality - Cashmans
Grooved Rubber Stall Mat - 4ft x 6ft x 3/4" - Horizon Livestock & Poultry Supply
Amazon.com: Interlocking Rubber Mat Flooring 4' x 6' x 3/4" for Gym or Equine Stall, Heaviest Duty, Indestructible, Non-Slip, Smooth or Diamond Surface - The Standard (3/4" Thick, Interlocking Diamond Plate) :
Red Barn 3 ft. x 4 ft. x 1/2 in. Thick Utility Rubber Stall Mat - 1102010 | Rural King
4-Ft x 6-Ft x 3/4-In Premium Stall Mat - Supplies & Stable Accessories | Redbarn | Coastal Country
Working With & Securing Stall Mats in a Garage Gym
North West Rubber Black Rubber Horse Stall Mat - 72-in Length, 3/4-in Thickness, Made in USA, Eco-Friendly, Easy to Clean, Textured Surface for Traction in the Horse Stall Accessories department at Lowes.com