Richard SCF STL

Welcome, if we can be of any assistance give us a call: 314 993-8468.
Thanks,
Richard

Companies have used bullet "resistant" to misrepresent what type of protection can be gained.  Like others have advised; be very, very careful.
 
Some companies have the resistance tested where they do the following:
-Use extra thick glass
-Add layers to both sides of the glass
-Add multiple layers of film
-Add multiple layers on both sides of the glass.
 
And yes, if you add 3 layers of 14 mil to both sides of the glass, you can get some results that look good.  But that is not realistic in 99% of the situations.

I have done some in house "experiments" ... I have ammo that will go through anything. .. I don't care what is says.

Be sure to ask the manny if they'll stand behind their product without the use of kevlar patched on the glass during live testing.
 
Simply too many variables and risks involved in such an endeavor; how far away from the glass, at what angle, what caliber of ballistics, how thick is the film used, how many layers of thick film, glass thickness, tempered or laminated. I do know it has been tested with a 9mm at an undisclosed location in VA by undisclosed group of people who, along with me, will never divulge the results, what film was used, the number of layers tested, distance or angle.
 
Sorry... variables can wipe away anything near a success. 
 
Like drugs, just say 'no'!

I'm with WTFH, be very careful.

Be vewy vewy cawelful when encouraging a sale on "bullet resistance".
If you make a statement to a custy that your manufacturer has not made you are askin for a world of hurt if some dumbass HEARD bullet proof and stands behind film and sticks his tongue out a gun totin tool.