Am I able to keep my old window trim if I install shutters? Absolutely! There’s a reason to take out or make alterations to your existing window trim when putting in new plantation shutters. Natural Ovation wood shutters and deluxe Polywood shutters are available in a variety of frame styles to fit easily into your existing window trim. If your windows are trimless, you can choose a specific frame style to install directly onto the wall around your window to fix your beautiful new shutters to your window opening.Your shutter installation crew will measure each of your individual windows during your free in-home consultation to ensure that your window trim is perfectly complemented by the frame of your new shutters.