there might be. It so happens I'm looking for a t visor as well. try looking for a face shield. go to lowes or home depot and tell them you want a face shield, they'll know what you're talking about.
exactly how dark is a store bought visor when you look through it is it hard to see through at all. All the visors I have made so far are made by cutting a clear plastic coke bottle in to a T shape and lightly coating the out side with a black sharpy magnum. vison is ok as long as you are not planning to ware it at night. I just want to know if it is worth buying one instead of contiuing to make them like this.