It has a higher strength is ideal for use in applications such as outdoor signs, furniture, toys, and others where good strength, machinability and surface hardness are required. FSC and ISO 14001 certified for environmental sustainability. Custom Size 3/16 inch Thick Project Panel Tempered Hardboard 12 inch x... 1/8 or 3mm thick. Actual Measurements: 24 x 24. My shop provides the custom order, if you need any sizes not included, please feel free to contact me. 1/8 or 3mm thick. Measurements: 24 x 24 Hardboard Tempered Panel 3mm Standard Hardboard 2440mm x 1220mm (8' x 4 Masonite Boards For Painting Have A Question About Hardboard Tempered Panel (Common: 3/16 In. X 4 Ft Masonite Drawing Board Flat and smooth surface Type Seat Adjustment Switch Knob Button Cover Trim Fit 1 For Ford F150 2015+/Maverick 2022+ Color Carbon Fiber Manufacturer Part Number This product is FSC certified and free of formaldehyde.