Hello unkle3474 !
Welcome to DIY Screens!
Well ya dredged up a 14 month post there! Might be problematical at best to expect an answer from a member who only posted 3 times, and the last one is the one above dated over a year ago.
The material revered to:
...........seams like a worthy investment, even on a "chance" guess. It is listed as having a Matte white surface.
And it's encouraging to not that being a Vinyl material, once stretched across a Frame it's ripe for painting on at a later date should you wish to ramp up it's performance potential beyond that of a simple White surface.
Why not take the plunge and get some...try it, and report on it's applicability. And / or send the OP a PM. Unless he's dropped off the face of the Planet and does not receive notifications from AVS at all, he might respond quicker that way with the info you seek.