This is one of over 4625 effects generated by Filter Forge, a Photoshop plugin that allows you to create your own filters.
To open this filter, you must have Filter Forge 1.0 or higher installed on your computer. If you don't have it installed yet, click here to download Filter Forge
Smoked glass with some nice randomized square clear line patterns to see things through.
Smoked Glass Frosted Glass Patterned Glass Glass Pattern