WINSOR&NEWTON-Canvas Panel. A professional range of pre-stretched artist canvases manufactured to the highest quality standards. Heavier weight, 240ml natural cotton duck with a medium grain surface. Ideal for oil, acrylic, and alkyd. Triple-coated with acid free sizing and two coats of highly pigmented acrylic primer formulated. by Winsor & Newton. This canvas board is prepared for immediate use. by the artist. Originally a sketcher's product, these superior. quality canvas boards feature canvas laminated onto high quality. boards of excellent stability. This package contains three canvases. Canvas size: 30cm x 23cm . Colour: White. Imported.