Understanding common window and door terminology can make it easier to choose the right products for your home or business. At Miller Window, we believe informed customers can make more confident decisions when planning a window replacement or new installation project. This glossary covers some of the most frequently used terms related to windows, doors, glass, and installation services.
Whether you are comparing energy-efficient window options, learning about frame materials, or reviewing installation details, knowing these terms can help simplify the process. Our team works with homeowners and commercial property owners throughout Central Florida to provide guidance, quality products, and professional installation services designed for long-term performance and reliability.
Casement Window – A window attached to hinges on the side that opens outward using a crank handle.
Double-Hung Window – A window style with two movable sashes that slide vertically for ventilation and easy cleaning.
Energy Efficiency – The ability of a window or door system to help reduce energy loss and improve indoor temperature control.
Impact Window – A reinforced window designed to withstand strong winds and flying debris commonly associated with severe weather.
Insulated Glass – Multiple panes of glass separated by air or gas-filled space to improve thermal performance and reduce outside noise.
Installation – The process of removing old windows or doors and properly fitting new products to ensure secure operation and long-term performance.
Low-E Glass – Glass coated with a thin, transparent material that helps reduce heat transfer and improve energy efficiency.
Sash – The movable part of a window that holds the glass panes in place.
Sliding Window – A window that opens horizontally by sliding one sash past another.
Tempered Glass – Safety glass designed to break into smaller, less dangerous pieces if shattered.
Weatherstripping – Material used around windows and doors to help seal gaps and reduce air or water infiltration.
Window Frame – The structural outer portion of a window that supports the sash and glass components.