【Reduce Light Leakage】They are made of light-absorbing PVC plastic material. Works on cellular shades, honeycomb blinds, roller shades and blinds, roman shades and more. Light Filtering 100%Blackout 100%Blackout 100%Blackout 90%Blackout 95%Blackout 95%Blackout 100%Blackout.
100% Blackout Light Blocking Strips for Window Shades – 4PCS, 58″ Black
【Reduce Light Leakage】They are made of light-absorbing PVC plastic material. Works on cellular shades, honeycomb blinds, roller shades and blinds, roman shades and more. Operation Mode Manual. Mounting Type Outside Mount.