Blackout Window Film for 100% Light Blocking 17.7" x 78.7" Remarks: 1.VIDEO INSTRUCTIONS provided to ensure successful application,Please contact our after-sale support team for the VIDEO 1.VIDays put the film on the inside of window and only apply it to clean and smooth glass 1.VID for Removing the Carrier Film: Place two pieces of tape on two sides and then remove 1.VIDtallation: 1.Trim films to required size.2.Clean glass 3.Wet glass with soapy water 4.Peel off backing film and wet the back of film with soapy water 5.Set up film on glass 6.Squeegee away water and air bubbles 7.Cut off marginsIncluded 1x Roll 17.7" x 78.7" Window FilmCustomer Service: If you have questions and problems, please contact us!