The EDTM  GS1331 is a glass sample set is used to compare the performance of a given type of glass with and without window film applied. The kit contains two pieces of each primary type of window found in the field. Simply apply window film to one and leave the other clear. You can then utilize a variety of other meters to show the increased performance of the piece of glass with the film installed vs the clear piece with no film.

The GS1331 includes:

– 2 Single Pane Clear Samples
– 2 Dual Pane Clear Samples
– 2 Dual Pane Low-E (Hard-Coat) Samples