I would like to share what I found out over the past few days about the Factory window tint and UVA/UVB blocking.
(I am not sure what the "read door partition glass" refers to however on the 2017.)
According to Subaru Of America,
2017 Forester Premium Windows:
UV penetration levels are listed below. These levels are what penetrate the glass.
Front windshield - 0% for both UVA and UVB
Front partition glass - 20% UVA and 1% UVB
Front door glass - 20% UVA and 1% UVB
Moonroof - 0% UVA & 1% UVB
Rear door glass with dark tint - 5% UVA & 1% UVB
Rear quarter glass with dark tint - 10% UVA & 1% UVB
Rear glass with dark tint - 10% UVA & 1% UVB
Listed below are the Visible Ray Light Transmittance Values:
Front windshield - 80%
Front partition window - 75%
Front door glass - 75%
Moonroof - 80%
Rear door glass with dark tint - 20%
Rear door partition glass with dark tint - 25%
Rear quarter glass with dark tint - 25%
Rear glass with dark tint - 30%
And for a 2014 Touring:
UV penetration levels are listed below. These levels are what penetrate the glass.
Front windshield - 0% for both UVA and UVB
Front partition glass - 10% UVA and 1% UVB
Front door glass - 10% UVA and 1% UVB
Moonroof - 0% UVA & 1% UVB
Rear door glass with dark tint - 10% UVA & 1% UVB
Rear quarter glass with dark tint - 10% UVA & 1% UVB
Rear glass with dark tint - 15% UVA & 1% UVB
Listed below are the Visible Ray Light Transmittance Values:
Front windshield - 80%
Front partition window - 75%
Front door glass - 75%
Moonroof - 80%
Rear door glass with dark tint - 25%
Rear quarter glass with dark tint - 25%
Rear glass with dark tint - 30%
(I am not sure what the "read door partition glass" refers to however on the 2017.)
According to Subaru Of America,
2017 Forester Premium Windows:
UV penetration levels are listed below. These levels are what penetrate the glass.
Front windshield - 0% for both UVA and UVB
Front partition glass - 20% UVA and 1% UVB
Front door glass - 20% UVA and 1% UVB
Moonroof - 0% UVA & 1% UVB
Rear door glass with dark tint - 5% UVA & 1% UVB
Rear quarter glass with dark tint - 10% UVA & 1% UVB
Rear glass with dark tint - 10% UVA & 1% UVB
Listed below are the Visible Ray Light Transmittance Values:
Front windshield - 80%
Front partition window - 75%
Front door glass - 75%
Moonroof - 80%
Rear door glass with dark tint - 20%
Rear door partition glass with dark tint - 25%
Rear quarter glass with dark tint - 25%
Rear glass with dark tint - 30%
And for a 2014 Touring:
UV penetration levels are listed below. These levels are what penetrate the glass.
Front windshield - 0% for both UVA and UVB
Front partition glass - 10% UVA and 1% UVB
Front door glass - 10% UVA and 1% UVB
Moonroof - 0% UVA & 1% UVB
Rear door glass with dark tint - 10% UVA & 1% UVB
Rear quarter glass with dark tint - 10% UVA & 1% UVB
Rear glass with dark tint - 15% UVA & 1% UVB
Listed below are the Visible Ray Light Transmittance Values:
Front windshield - 80%
Front partition window - 75%
Front door glass - 75%
Moonroof - 80%
Rear door glass with dark tint - 25%
Rear quarter glass with dark tint - 25%
Rear glass with dark tint - 30%