Technical diagram showing SDLs vs GBGs

Traditionally, windows were made up of small pieces of glass separated by wood mullions, creating the familiar checkered pattern that homeowners know-and-love. Today, we have found a way to preserve the character and style of traditional windows while avoiding certain maintenance concerns. Two popular, modern grille options include Grilles Between Glass (GBG) and Simulated Divided Lites (SDL). Which one is right for your window?


GBG are a non-removable feature built within the glass, making them an attractive zero-maintenance option. They create the luxurious appearance of traditional grilles, while offering easy cleaning for both interior and exterior glass surfaces.


 SDL are installed directly on the exterior and interior surfaces of the glass (non-removable), boosting your windows curb appeal potential while re-creating the traditional appearance of a true divided lite. Install an optional shadow bar to complete the authentic look.

FAQ Friday is a weekly feature where we answer Frequently Asked Questions about our products, service or industry. To see other FAQs we’ve answered, visit our FAQ page. If you have a question you don’t see an answer for, just ask in a comment or contact us. – See more at: JELD-WEN Blog

Write A Comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.