Start by examining your current grille, especially at the ends. Pay close attention to the shape of the clips, the material they’re made from, and how they are positioned. This inspection will help you identify a compatible replacement.
Next, inspect the material surrounding the glass, as it plays a crucial role in determining fastener compatibility. Look at the window or door frame to determine the type of surface the grille attaches to. You may find vinyl surfaces near the glass or wood stops and frames that the grille clips into. Understanding the installation surface will help you select the right type of fastener.
The grille pattern also affects fastener selection. A standard grille pattern may use a different fastener than a custom grille pattern.
If you're unsure which fastener to choose, please refer to the installation guides, images, and web links provided below. If you still need assistance after reviewing the information, Contact Andersen® Windows and Doors for personalized support. Providing photos of your existing grille and frame can help ensure you receive the correct match.
Visual Reference
Use the images and descriptions below to help identify the fastener type that matches your existing grille.
Pivoting Grille Fastener
Description: Located at the end of the grille, pivots open to allow grille installation.
Commonly Found In: Tilt-wash double-hung and picture windows.
Colors Available: White, Sandtone.
Tip: Look for a rotating mechanism at the grille ends.
Instruction Sheet: Grille Application: Interior Removable - 200 Series Double-Hung Windows (0005266) 
.
Available in White and Sandtone
Nylon Chisel Plunger
Description: Inserted into the end of the grille; has a chisel-shaped tip.
Commonly Found In: 400 Series windows without grommets (post-May 2010).
Tip: Check for a flat, angled plastic tip at the grille ends.
Instruction Sheet: Interior Hardwood Grilles for Andersen® 400 Series Tilt-Wash, Double-Hung Picture and Tilt-Wash Transom Windows (9033637)
Instruction Sheet: Interior Hardwood Grilles for Andersen® 400 Casement and Awning Windows (9033638)
Nylon Chisel Plunger
Spring Plunger
Description: Spring-loaded plunger fits into a circular grommet in the sash.
Commonly Found In: Older 400 Series and 200 Series windows with grommets.
Tip: Look for a small spring-loaded pin near the top of the grille.
Instruction Sheet: Interior Removable - 200 Series Double-Hung Windows (0005178) .
Spring Plunger
OSF Fastener
Description: Used in a wide range of products, especially for custom patterns.
Commonly Found In: Patio doors, specialty windows, and custom grilles.
Colors Available: White, Terratone, Sandtone.
Tip: Often used when other fasteners don’t fit due to custom grille shapes.
Instruction Sheet: Grille Application: Interior Wood - A-Series, 400 Series, 200 Series Windows & Patio Doors (0005285) .
OSF Fastener Available in White , Terratone , and Sandtone
Barbed OSF Fastener
Description: Barbed version of the OSF fastener for secure grip in wood.
Commonly Found In: Woodwright®, A-Series, and architectural windows.
Available in 10+ colors.
Tip: Look for small barbs on the fastener that grip into wood.
Instruction Sheet: Grille Application: Interior Wood - A-Series, 400 Series, 200 Series Windows & Patio Doors (0005285) .
Barbed OSF Fastener
Flat Fastener
Description: Flat clip used with vinyl lips next to the glass.
Commonly Found In: Casement/awning stationary windows and gliding patio doors.
Tip: Check for a flat surface next to the glass where the grille sits.
Instruction Sheet: Grille Application: Interior Wood - A-Series, 400 Series, 200 Series Windows & Patio Doors (0005285) .
Metal Flat Clip
Barbed Fastener
Description: Metal clip with barbs for wood surfaces or stops.
Commonly Found In: 400 Series specialty and picture windows.
Tip: Look for a metal clip with small barbs that press into wood.
Instruction Sheet: Grille Application: Interior Wood - A-Series, 400 Series, 200 Series Windows & Patio Doors (0005285) .
Instruction Sheet: Interior Hardwood Grilles for Circle Windows (0004342) .
Metal Barbed Clip
Hub Fastener (Discontinued)
Note: No longer available. Use barbed fastener as a replacement.
Previously Used In: Elliptical and half-circle windows.
Instruction: Perma-Fit® Interior Grilles for Andersen® 400 Series Elliptical Windows (0005190).
Hub Fastener
Legacy Fastener: Perma-Shield® Gliding Patio Door (1978–1985)
Note: Not available online. Contact Andersen directly for assistance.
Perma-Shield® Gliding Patio Door Grille Fastener
To view an installation video for barbed, OSF and flat fasteners, see Interior Removable Grille Installation for 400 and 200 Series Patio Doors.
To view an installation video for a barbed OSF and chisel plugers, see Interior Removable Grille Installation for 400 Series Woodwright® or 400 Series Tilt-Wash Double-Hung Windows
If you're still uncertain about the type of grille or the installation process, Contact Andersen® Windows and Doors for personalized assistance.
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