Photo 1 of 100% Blackout PVC Light Blocking Tracks for windows blinds, Block Sunlight Along Two Sides of Blackout Shades Blinds?Easy to Install?Light Blocking Strips for Bedroom (Black?57.5"(2PCS))

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Photo 1 of 100% Blackout PVC Light Blocking Tracks for windows blinds, Block Sunlight Along Two Sides of Blackout Shades Blinds?Easy to Install?Light Blocking Strips for Bedroom (Black?57.5"(2PCS))Photo 2 of 100% Blackout PVC Light Blocking Tracks for windows blinds, Block Sunlight Along Two Sides of Blackout Shades Blinds?Easy to Install?Light Blocking Strips for Bedroom (Black?57.5"(2PCS))