New 5m & 4.4m white plastic strips windowsill covers? (Norton Lees S8)

Not sure what these are, found in garage. Still have plastic protective backing on. 1 x 5m & 2 x 4.4m long by 9.5cm & 6.5cm wide. Flexible but tough. Useful on a house refurb or allotment project? Please include availability for collection including day and time in reply. Thank you