Shurtape Duck Pro PC 609 silver duct tape comes in a 48 mm width, 55 m length, uses a blended rubber adhesive and is packaged 24 rolls per case. Can be used in the following temperature range: 25 F to 200 F. Provides a tensile strength of 26 lbs/in. When purchasing this product, consider the thickness. The variances in thickness often make an important difference in proper performance. This duct tape has a 10 mil thickness. Some duct tapes have grades assigned to them. This particular duct tape is considered professional grade. This duct tape meets the following standards: UL 723.