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How To Pick The Best Louver Size For Your Plantation Shutters

September 26, 2025

One of the best things about plantation shutters is how customizable they are. Not only can they be customized to your exact window dimensions, but you can choose their color, frame style, and even louver size.

Louvers are the slats on your shutter panels that tilt open and closed. You have three options for plantation shutter louver sizes. These sizes will look and work differently for every home, so you will need to consider several factors and scenarios before picking the best louver size for your plantation shutters.

Small Windows Look Best With Two-and-a-half-inch Louvers

White Polywood shutters with 2 1/2-inch louvers on three kitchen windows

When choosing the best louver size for plantation shutters, you want louvers that fit the proportions of your windows. Therefore, smaller windows look best with smaller louvers. When you want shutters on a small window, your installer may recommend two-and-a-half-inch louvers that won’t overwhelm your window.

Two-and-a-half-inch louvers may also suit older and historic homes best. These narrow louvers work well on older, small windows and complement the older architecture. Houses of certain bygone eras had interior shutters with small wood louvers before today’s many window treatment options appeared. Like today, the narrow louvers offered privacy and protection from drafts and moisture better than thin fabric curtains.

Get The Most Light And Clearest Views With Four-and-a-half-inch Louvers

White Polywood shutters with wide louvers on dining room windows

Like small shutter louvers on small windows, broad louvers best suit large and tall windows. If you have an expansive picture window or floor-to-ceiling windows, consider shutters with four-and-a-half-inch louvers. They’ll complement your window proportions and give your windows an appealing, modern look. That extra space between your wide shutter louvers will also make quick work of cleaning shutters on large or tall windows.

You may also want four-and-a-half-inch louvers on windows with a beautiful view or rooms needing extra illumination. The wide four inches between the open louvers will give you the clearest view outside and let in the most light, while the louvers still provide privacy. Additionally, with broader and fewer louvers, you’ll enjoy excellent energy efficiency—a vital consideration for big windows.

You Can’t Go Wrong With Three-and-a-half-inch Shutter Louvers

White Polywood shutters on large and small kitchen windows

If you have a medium-sized window with no special needs, standard three-and-a-half-inch louvers are the way to go. They are the most requested size for popular faux-wood Polywood® shutters because they are the “in-between size” and give most windows a balanced look.

You get all of the benefits of interior shutters with three-and-a-half-inch louvers. The wide louvers mean you have fewer of them to let outside temperature or light through. You’ll enjoy almost total darkness and excellent insulation. Like with wider shutter louvers, you still get large openings for light and a view outside to enjoy a sunny day or watch the kids playing outdoors. That space makes cleaning the louvers easy, too!

Find Every Shutter Louver Size At Sunburst Shutters

Not sure what the right louver size is for your window? The experts at Sunburst Shutters can help. We’ll show you all your options for custom interior shutters. To get started, give us a call at 877-786-2877 or fill out the form below to schedule a free in-home consultation. One of our shutter experts will show you samples and help you design your perfect shutter.