The only trap that I have with a top is loaned out, and not available for a pic. But, the top is just a thin piece of plexiglass. The box shaped frame is constructed of 1/2" schedule 40 pvc pipe and held together at the corners with 3-way fittings. The top of the frame is 3/4" for better flotation with the additional weight of the lid (1/2" to 3/4" adapters are used in the 3-ways). 1/2" wire mesh screen was used for the funnels and to cover the frame.