How To Install Window BoxesBlack Window Box with Trellis

All of our window boxes are designed to be installed so that they are integrated into your home and they are installed in the safest, most reliable manner.  At times, window boxes over 48" long may need to support up to and more than 100 pounds depending on how you pot and plant them.  For this reason, you should be wary of many of the simplistic bracket and cleat systems on the market today which are not necessarily designed to support these kinds of weights and are a major liability and safety hazard.  All of our PVC window boxes are installed using lead anchors and lag bolts which keeps your window boxes from having any exposed fasteners and allows you to install on brick, siding, stucco, or even rock for the gauranteed most safe and secure method available on the market today!  This is the same method that a contractor or handyman would use and it's a tried and true method that many of our customers can do on their own by following our simple step-by-step instructions.

Measuring Windows for Window Boxes

Window Box Diagram - Measure

When measuring your windows to determine the size of your window box needs, a good rule of thumb is to get a window box that matches the size of your window or one that matches your window plus your trim.  This is especially true when you have a wide trim around your window which makes the window look bigger.  You can rarely go wrong by getting a window box that matches your window.Measure Window Boxes with Shutters  However, when you get a window box that overhangs your window by a few inches this helps create the right balance of window box and window without the window box looking undersized or swallowed up.  This is even more true if you have shutters, which tend to make the window look bigger than it actually is.  We generally recommend that you go 4-6 inches larger than your window sill in these instances (2-3 on each side). 

All of our listed sizes are for the base boxes (not including the cap or trim on the top or edges).  Any additional trim that overhangs one of our boxes is not added to the size of the window box.  So for example, a 36" traditional box is built as a 36" box with a cap that overhangs about 2 inches on each side (making it 40" at top).  Generally, when looking at a window box you see the box, not the trim.  It's a good idea to get a window box at the desired length and not worry about the cap or trim unless there is a ritical dimension you cannot exceed (sometimes shutters hang lower than the window).  If you have any questions about measuring, please call 770-845-5570 or email us.  Remember, we do custom window boxes with no additional custom fees.  If you think you need a window box length that's not already in our shopping cart give us a call and we'll be happy to assist you or fill out our free quote form.

Note:  All three windows are the same size, yet all three window boxes are different sizes that we would recommend.