Does the T-Top 4 in. Bonderized Steel Exhaust Vent Pipe Flashing include anything for bird or insect protection?

This model does not have a screen, but you can purchase a screen separately, and attach it with silicone calking that is intended for roof sealing

This model does not have a screen, but you can purchase a screen separately, and attach it with silicone calking that is intended for roof sealing. This will withstand the weather and elements of being on the roof.