Can I use a wood Doorlite on a flush fiberglass door?
Yep. You might notice that some fiberglass doors run slightly smaller than the standard 1-3/4″ thickness of most exterior doors; we have improved the tolerance of our Doorlites to withstand this variation. We do recommend priming or sealing all sides of the wood frame prior to installation. Can I use a wood Doorlite on a flush hollow metal door? Yes, and please use proper safety precautions when cutting the metal. The big box store has some interior flush wood doors for sale. Can I use these? Our Exterior Doorlite Kits are intended for exterior flush doors that are 1-3/4 inches thick. Our Interior Doorlite Kits are made for interior doors that are 1-3/8 inches thick. Can I use Crestview Doorlites on a stile-and-rail or panel door? Our door lites will fit on doors that are 1-3/4 inches thick (exterior lites only) or 1-3/8 inches thick (interior lites only). Depending on the construction of the stiles and rails, you may be able to remove the panels and apply our doorglass in their place.