The Heavy Duty Prewashed Scrim is a heavier, more tightly knited scrim cloth manufactured from linen, which is also prewashed and ready for use. It is an ideal product to use for the cleaning of glass after washing, and also excellent for spot cleaning of window frames and leaded glass. It is best used wet for washing, and dry for polishing and they can help to provide a streak free finish, and leave no reside or marks. It measures 91cm x 91cm