Well pump pipes vary dimensionally. Its always a good idea to measure your well pump pipe so you can determine which Solar lighthouse cover to purchase. All Decor Storehouse wooden solar lighthouses have a slight taper from bottom to top. The higher the well pump pipe goes into the solar lighthouse well pump cover the less room there is at the top. The dimensions you need to know are..
1. The widest width across the top of the well pipe.
2. The height from top to bottom.
For the 48″ solar lighthouse the maximum widest width is 9.5″ and 20″ in height.
For the 36″ solar lighthouse the maximum widest width is 8″ and 14″ in height.
Below is a photo showing where the dimensions are on a common well pump pipe.