Choosing the right half circle window coverings can enhance privacy, light control, and style for arch. This guide reviews top options designed to fit rounded window shapes, highlighting ease of installation, blackout capability, and durable materials. Below, a quick overview helps compare size options, color choices, and installation features across five reliable picks.
| Product | Brand | Radius / Size | Key Benefit |
|---|---|---|---|
| Arch Window Shade Blackout Cellular Shades Half Circle Moon Window Covering No Drill Honeycomb Cordless Blinds | Maritown | 36×18 inch (examples vary by option) | Easy install with arched fixed bracket; dual-sided color option |
| Myshade Arch Window Shades Half Circle Blackout Cellular Shades Cordless No Drill Blinds | MYshade | 72″ W X 36″ H (radius 36″) | Complete blackout with laminated foil; tool-free install |
| Myshade Arch Window Shades Half Circle Blackout Cellular Shades Cordless No Drill Blinds | MYshade | 72″ W X 36″ H (radius 36″) | Durable fabric and easy trimming for irregular arches |
| Arch Window Shade Radius 18 inch Half Circle | Maritown | Radius 18 inches | Self-adhesive, quick no-tool install |
| Changshade Arch Window Shades Blackout, Half Moon Radius 24″ | Changshade | Radius 24 inches | Customizable trim and easy, tool-free install |
Note: This selection focuses on arched and half-moon window needs, balancing blackout performance, ease of installation, and versatility for different radii and window sizes.
Arch Window Shade Blackout Cellular Half Circle Moon by Maritown

Arch and half-circle design with a two-sided color honeycomb fabric helps block light and reduce external heat. The installation uses an arched fixed bracket and strong double-sided tape, supporting stability and preventing tilting. Available in multiple sizes and colors, this option suits a variety of arched windows while maintaining a clean, cord-free look. The fabric is a thick non-woven material with built-in light-blocking properties and a white back for a uniform appearance on the backside.
Myshade Arch Window Shades Half Circle Blackout Shade by MYshade

This Myshade option features a 36″ radius to fit arched windows with radii ranging from 6 to 36 inches, ensuring a snug blackout fit. The durable non-woven fabric is paired with laminated aluminum foil for complete privacy. It is designed for easy installation without tools and includes accessories to prevent tilting or falling. The product can be trimmed to achieve a precise fit for irregular arches, offering flexibility for challenging window shapes.
Myshade Arch Window Shades Half Circle Blackout (Black) by MYshade

Similar to the white version, this black variant provides complete blackout with a laminated aluminum foil backing and a half-moon design. It emphasizes easy trimming for fit, tool-free installation, and a sturdy setup with double-sided tape to prevent tilting. The durable fabric aims to offer reliable light control and privacy for arched windows, while maintaining a sleek, minimal profile.
Arch Window Shade Radius 18 Inch by Maritown

This arch shade measures 18 inches in radius and includes an arched accessory with double-sided adhesive to secure the shade firmly. It offers easy, tool-free installation—simply stick the shade to the arched accessory and position it on the window. Made from thick, high-quality non-woven fabric, it filters 40%–60% of light, helping preserve privacy while reducing heat and UV exposure. It’s a practical option for smaller arched windows or when you need a quick upgrade.
Changshade Arch Window Shades Blackout Half Moon Radius 24″

Changshade offers a 24-inch radius blackout arch shade with a half-moon silhouette and no-drill installation. The fabric uses a laminated aluminum foil backing to ensure complete blackout and privacy. The product is designed to be trimmed to fit irregular arches and includes accessories for stable, tool-free mounting. This option is suitable for a mid-range arch size and emphasizes easy customization and installation flexibility.
Buying Guide: Key Considerations For Half Circle Window Coverings
- Radius compatibility: Arch windows vary in curvature. Confirm the product’s radius or the ability to trim to fit your window’s exact arch to achieve a snug, even look.
- Light control vs. privacy: If you need full darkness, look for blackout materials with a foil backing or laminated layers. For softer light, choose lightly tinted or semi-opaque fabrics.
- Installation method: Options include no-drill adhesive, arched brackets, and double-sided tape. Choose based on window frame material, permanence you want, and whether you plan to relocate.
- Material durability: Non-woven fabrics with foil backing tend to offer better blackout performance and easier maintenance. Consider fabric thickness and cleaning requirements.
- Color and backside: Some half-moon shades are dual-colored; consider whether you prefer a white back for a uniform exterior look or a color on the front to match room decor.
- Trim ability: If your window shape is irregular, check whether the shade can be trimmed without compromising function or warranty.
- Cordless operation and safety: Cordless designs reduce risk for children and pets and provide a cleaner aesthetic.
- Maintenance and warranty: Look for easy-to-clean fabrics and documented warranty terms for long-term use.
These considerations help evaluate which half circle window covering best suits your arched window dimensions, light-control needs, and decorating goals while offering practical installation options and ongoing maintenance.