If you have the type of window that swings out, measure and mark down 6 inches (15 cm) to 8 inches (20 cm) instead.
You should use a 3-inch (7. 6 cm) galvanized decking screw. Be sure to attach the mounting bracket to the solid wood window frame—not the window trim. [3] X Expert Source Emily FazioHome Improvement & DIY Specialist Expert Interview. 27 July 2021.
You’ll know your bracket is straight when the bubble on the level is centered between the lines on the tube.
These screws will be hidden by the window box once you complete your install.
When using the level, take note of where the bubble is located inside the tube. If the bubble is to the right of the lines, your window box will lean downward to the left. If the bubble is on the left of the lines, your window box will slope down to right. Make sure the bubble is directly in the center before you drill the nails.
If your window box has an angled side, make sure that is facing outward. It should be the front of your box.
Now you have completed the secure install and can fill and decorate your window box.
Each vinyl siding hook will hold up to 12 pounds (5. 4 kg) of weight, so keep that in mind when purchasing and filling your window boxes.
Keep in mind that these hooks will only work if your house has vinyl siding. It will not work on brick or stone house siding. Install at least two hooks per window box to ensure that the box is secure on the side of your house. Once you install your hooks, you will be able to easily move them around to adjust for the length of your window boxes. Just be careful that you do not scratch the surface of the siding.
If you want to use a wooden window box, you can cut two slits in the back of the box where your hooks will fit.
A window box that is too short will look off-balance, while one that is too long might make your house look too crowded. You should also consider the height of your window box. The height should be about 20-25 percent of the height of the window that you’re hanging it from.
Larger window boxes, 1 foot (0. 30 m) in depth and width, would be best if you want to include a lot of plants to fill out the box.
Try to find planters with rubber or plastic coating. Metal brackets will scrape your railing and cause damage.