When it comes to doors and windows, we usually don’t talk about Kelvin values. Kelvin (K) is a fancy term for measuring how hot or cold something is – like the temperature. We often use Kelvin to chat about lighting and how warm or cool the light looks. Lower Kelvin values mean the light appears more warm and yellow, while higher values make it look cooler and bluish.

Now, let’s talk about doors and windows. Instead of Kelvin, we use some different numbers to describe how good they are at things like holding in heat or stopping sunlight. For instance, we might discuss the U-factor. This number tells us how much heat can slip through a door or window. A lower U-factor is better because it means less heat escapes.

Then there’s the Solar Heat Gain Coefficient (SHGC). This one tells us how much sunlight can sneak in through a door or window. A lower SHGC means less sun heat is getting in – which can be a good thing!

Lastly, we have Visible Transmittance (VT). Think of this as a measure of how much light can pass through a door or window. A higher VT means more light can come in, making the inside brighter and more cheerful.

In simple terms, when we’re talking about doors and windows, we use these numbers – U-factor, SHGC, and VT – to understand how good they are at blocking heat and sunlight, and how much beautiful light they let in. These numbers guide us in picking doors and windows that are energy-efficient and get their job done right.

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