Can I keep my existing window trim when I install shutters? Absolutely! There’s rarely a reason to take out or do work on your existing window trim when installing new plantation shutters. Natural Ovation wood shutters and deluxe Polywood shutters are available in a variety of frame styles to fit naturally into your current window trim. If your windows don’t have trim, you can choose a specific frame style to install right onto the drywall around your window to secure your stunning new shutters to your window opening.Your installer will measure each of your house’s windows during your complimentary in-home consultation to ensure that your window trim is beautifully complemented by the frame of your new shutters.