Polythene sheets are general-purpose plastic sheets designed to protect items in storage against dust and moisture. Ideal as a floor covering for use while building and decorating to protect surfaces. Centrefold polythene sheets are unperforated, allowing for exact sizes to be cut. We recommend a packing knife is used to cut the sheeting down to the required size. All polythene sheets are supplied centrefold, and the dimensions displayed show the width of the sheet when opened out. Please see the individual products for their micron information.