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factory tint + aftermarket tint= ? ne one have a formula

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Iron Duck Designs

Iron Duck Designs

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does anyone have a formula that they use to figure out what % the windows will meter out to if there is an existing factory tint? Example: My magnum is 70% factory on the fronts, so if I installed 42% on the window what percent would the tinted window come out to...just curious...I have been figuring around 8-10% less than the tint % that I install and has come out close everytime.

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Mdog

Mdog

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You can simply multiply and get your answer. 70 x 42 = 29.4% This is assuming that the film actually IS 42% and not lighter or darker because soemtimes its not exactly what they say it is. I have had film that said it was 30% and it was actually 25% out of the box, But you can get the idea if the numbers are exactly what you saw they are :beer just multiply

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Guest scottydosnntkno

Guest scottydosnntkno

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You can simply multiply and get your answer. 70 x 42 = 29.4% This is assuming that the film actually IS 42% and not lighter or darker because soemtimes its not exactly what they say it is. I have had film that said it was 30% and it was actually 25% out of the box, But you can get the idea if the numbers are exactly what you saw they are :beer just multiply

:beer

figure out exactly the VLT of the stock glass and the actually VLT of the film, not the listed one, and then multiply them

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Guest tintjam65

Guest tintjam65

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To multiply is close

but not exactly

A light meter performance

and different light wavelengths

can skew to tinters favor

Here in NC ATR 35 did not pass

PT (centaur) did because of its blue look :beer

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