Reduces draughts and can save on your energy bills For gaps 2 - 5mm High quality EPDM rubber E profile for doors and windows Colour: White Length: 5 metres E Strip Directions for application: Make sure all surfaces are dry and clean Measure the length of the side of the door and cut strip to length. Separate at centre joint and peel off paper Apply to inside of door frame For sash windows, measure, cut to length and apply to top and bottom of the window that is in contact with the frame