Blinds for double windows — side-by-side window panels, wide picture windows, or any opening wider than a standard single shade — require a different approach than covering a single standard window. Get the sizing and configuration right and the result looks intentional and finished. Get it wrong and the window treatment looks like an afterthought. Here's how to do it correctly.
Understanding the Challenge
Wide windows present two related problems. First, a single shade wide enough to cover the full opening may exceed the maximum width available for that shade type — most shades have a maximum width specification beyond which the fabric won't hang correctly or the motor lacks sufficient torque.
Second, even when a single wide shade is technically possible, it may not be the best solution. A very wide shade is heavy, requires more headrail support, and when raised creates a thick bundle of fabric at the top of the window that can look bulky.
Two shades side by side — correctly sized and installed — often look better and perform better than a single very wide shade, particularly for blinds for double windows where the window has a center dividing element anyway.
Configuration Options
Single wide shade — works well for openings within the maximum width specification for the shade type. Clean, minimal installation with no center seam. Best for picture windows with no center divide and for openings that fall comfortably within width limits.
Two shades side by side — the standard configuration for blinds for double windows and other wide openings. Each shade covers half the opening. The center meet point typically falls at the window's center divide, making it visually natural. Both shades can be motorized and controlled simultaneously through a group channel on the remote.
Three shades — for very wide openings or bay window configurations. Each shade covers one section of the opening. Motorized group control allows all three to operate simultaneously from a single remote channel.
Measuring for Wide Windows
Accurate measurement is more critical for wide windows than standard ones because errors compound across larger dimensions.
Inside mount — two shades:
- Measure the total inside width at three points, use the smallest value
- Divide equally between the two shades — if one section is slightly narrower than the other, match the measurement to each section individually
- Measure height at three points per section, use the smallest value
Outside mount — two shades:
- Measure the total width you want to cover
- Add 3 inches on each outer edge for overlap beyond the frame
- Divide the total width between two shades — the center meet point should fall at or near the window's center divide
- For outside mount, the two inner edges meet at center without overlap — order each shade to exactly half the total desired width
Motorized Control for Wide Windows
Motorized zebra shades and motorized roller shades in a two-shade configuration for wide windows work best when both shades are on the same remote channel or grouped in a smart home scene — this allows simultaneous operation that looks and functions like a single wide shade.
With custom roller shades or motorized zebra shades in matched fabrics, the two-shade installation is visually seamless. The center seam reads as the window's natural center divide rather than as two separate treatments.
Blinds for Wide Windows: Which Type Works Best
Motorized roller shades — the cleanest solution for wide openings. Flat fabric, minimal profile when raised, available in the full range of blackout, light filtering, and sheer fabrics.
Motorized zebra shades — excellent for wide living room and dining room windows where the adjustable light control is most valuable. Two zebra blinds in a matched fabric on a wide window look intentional and contemporary.
Motorized cellular shades — for wide windows in rooms where thermal insulation is a priority. The energy performance benefit scales with window size — the wider the glass, the more heat transfer occurs, and the more meaningful the cellular insulation becomes.
Custom roman shades — for wide windows in formal rooms where fabric aesthetics matter. Two custom roman shades side by side on a wide dining room or living room window add the fabric warmth and tailored look that roller shades don't provide.
Browse our full range of custom roller shades, motorized zebra shades, motorized cellular shades, and custom roman shades — all available in custom sizes for blinds for double windows and wide openings — at BlindsMagic.com.
