In the composition of doors and windows, profiles are like the bones of the human body—supporting the overall structure and determining the lifespan, performance, and safety of doors and windows. Many people tend to only focus on the glass and appearance when choosing windows, but overlook the profile, the "unsung hero". In fact, the material, thickness, and structural design of the profile directly affect the thermal insulation, wind pressure resistance, and durability of the window. Today, we will break down the mysteries of window profiles to help you find the truly suitable "hardcore" choice for your home.