If you fix the screw to the pillar or beam to attach the light to the car port, there is a high possibility that the hole will not fit if you change the light. After installing with existing bolts together, screws and lights and solar screws on this product eliminate the need to scratch the carport. As strength is OK, afterwards you can use it if the size matches. I am sorry that it is not helpful because it is not the original usage. Since there is no knockout, it is good for such usage. It is cheaper than other well-known maker items, but quality is considered equivalent.