Standard Thermal Binding Covers give a stylish ‘perfect bound’ look to documents. They combine a transparent PVC front to display the title page clearly and a white silk-finish back, forming a totally secure spine with permanently bound pages. Size: 20 mm Sheets Capacity 80gsm: 180 Sheets Front Cover: Transparent PVC (150 Microns) Back Cover: Silk White (240gsm) for extra rigidity Quantity: Box of 50 Covers Ref# 107SIB370090