|The Vertilux Premium 118" Blackout is more than it appears to be. This fabric is not only a wide option for total light blocking with flame retardant properties. It is more than a fabric that will hang flat and roll up straight onto the tube. Premium 118" Blackout is a material that the industry has been waiting for to control the light on larger windows, and perform like a roller shade should, all in one. While it may look like a very simple product, Premium 118" Blackout is truly exceptional.