Fabric weight is the outcome of how a fabric has been woven, its finish and sometimes the fibre type. Looking at the weight can help you to decide if it will be the most suitable fabric for its end use.
GSM and OZ
GSM is a metric measurement meaning grams per square metre- it is how much 1 square metre of fabric weighs and the higher the GSM number the denser the fabric will be. Ounce per square yard (oz/sq2) is the imperial measurement which is also commonly used. A lightweight fabric is typically between 30- 150 GSM, medium weight 150-350 GSM and heavyweight 350+ GSM, such as our clear window PVC (640 GSM), although this can vary depending on the type of fabric. » Read more..