But see, here's why your question is above my paygrade (which is none). I wish someone else had chimed in, but nobody has. Here's my difficulty, and why I think anyone would have difficulty -- you're trying to supplement a large dose of potassium when it's plentiful in a range of very healthful foods.
Tinting of front windshield glass to reduce light transmission is not permitted, except for the upper 6 inches of the windshield. For side windows or rear windshield, glass tinting that reduces light transmission to less than 32% or increases light reflectance to more than 20% is not permitted. For SUVs, vans and trucks, the limit is 32% for the driverâs window and the front passenger window only.
Window tint darkness. The amount of light that can pass through your car windows is measured in percentages (called VLT), so make sure your tinting film is up to these standards! In California there is no difference in regulations for sedans, or SUVs and vans, so these laws are for all vehicles. 1  Windshield doesnât legally allow any tinting applied to it. 2  Front side windows must pass through more than 70% of light inside your car (70% VLT) 3  Back side windows and rear window can have any darkness.