When you’re selecting high‑performance doors and windows, you’ll often come across the term Kelvin (K) . But there’s a common misunderstanding: Kelvin is frequently mistaken for a measure of thermal performance. In reality, it serves a completely different purpose. Let’s clear up the confusion—and then focus on the numbers that actually matter for energy efficiency, … Continue reading Kelvin (K) Value in Windows: What It Means (and What It Doesn’t)