Window Terminology and Technical Specifications Guide

Fusion Welded Corners: This term refers to window frames where the corners are welded into one solid piece rather than being joined with screws.
- Purpose and Impact: This manufacturing process creates a completely airtight seal, significantly increases the structural integrity of the unit, and ensures the window remains perfectly in square over time.
Lexan Safety locks: Durable safety locks made from Lexan, allowing windows to remain open while locked.

Aluminum Reinforced Meeting Rail: This feature involves the placement of aluminum reinforcement inside the meeting rail of the window.
- Purpose and Impact: The reinforcement prevents the rail from bowing and sagging. This ensures the locks remain properly aligned and the window maintains a proper seal against the elements.
Virgin Vinyl: This is vinyl material that has never been recycled or remelted.
- Purpose and Impact: Virgin vinyl is inherently stronger and more durable than recycled vinyl. It is specifically resistant to fading, ensuring the window maintains its color and structural properties throughout its lifespan.
Beveled Edge: A contoured frame design used in specific window models.
- Purpose and Impact: Beyond improving the aesthetic appearance of the frame, the beveled edge serves the functional role of acting as the screen track.

NEOPORE Insulation: This is a dense, graphite-infused foam located inside the window frame.
- Purpose and Impact: It is designed to slow heat transfer, which improves interior comfort and lowers household energy bills. Additionally, its dense structure helps to reduce the transmission of outside noise into the home.
Super Foam Spacer: A flexible spacer component positioned between the glass panes.
- Purpose and Impact: Unlike rigid spacers, this foam spacer expands and contracts in sync with the glass panes. This flexibility is critical in preventing seal failure over long periods.
Krypton Gas: An insulating gas used between window panes to improve thermal performance.
- Technical Specifications: According to ProEdge word tracks, Krypton gas is $8 \times$ denser than air and $4 \times$ denser than Argon gas.
- Purpose and Impact: Its high density effectively slows heat transfer through the glass unit.
Soft Coat Low-E Glass: This glass is coated with silver, which is cited as the most reflective metal available for this application.
- Purpose and Impact: The silver coating reflects heat away from the glass, significantly improving energy efficiency by keeping heat out in the summer and in during the winter.

Constant Force Balance: A spring-based balance system used to support the window sashes.
- Purpose and Impact: This system allows the window to be opened and closed smoothly with very little physical effort required from the homeowner.
Tilt-to-Clean: A functional design feature common in modern sash windows.
- Purpose and Impact: It allows both sashes to tilt inward, permitting the homeowner to clean both the interior and exterior surfaces of the glass from inside the home.
Sloped Sill: A sill designed with a specific downward angle.
- Purpose and Impact: This acts as a self-cleaning mechanism that channels rainwater and debris away from the window, preventing moisture accumulation at the base of the frame.

Wool Pile Weather Stripping: Durable weather stripping that is sewn directly into a Mylar fin.
- Purpose and Impact: This combination helps keep outside air and moisture from infiltrating the home.
Q-Lon Seal: This is a refrigerator-style seal used on the window unit.
- Purpose and Impact: It creates an airtight barrier that enhances both the energy efficiency of the home and the comfort level of the residents.
Fiberglass Mesh Screen: A screen material made from fiberglass mesh.
- Purpose and Impact: This material is more resistant to tearing than standard screen mesh, thereby reducing the need for maintenance and frequent replacement.
Three-Point Locking System: A comprehensive security system that integrates multiple components.
- Components: It consists of steel locks, interlocking sashes, and specialized safety locks.
- Purpose and Impact: These elements work together to enhance the physical security of the window and provide peace of mind to the user.

Aluminum Capping: A maintenance-free exterior trim installed around the window.
- Purpose and Impact: It protects the window frame and provides a clean, finished appearance to the exterior of the house.
Win Number: A unique identification number assigned to every individual window.
- Purpose and Impact: This number allows for faster and more efficient processing of warranty service requests.
Seal Failure: This term identifies a specific failure state in an insulated glass unit.
- Mechanism: It occurs when the seal between glass panes breaks, allowing the insulating gas to escape while exterior air and moisture enter the gap between the panes.
Vertically Integrated: A description of the ProEdge business model.
- Process: This means the company handles all stages of the product lifecycle—manufacturing, shipping, and installing its own products—without relying on outside third-party companies.