I ve seen a solution called stackguard as well as a vent pipe guard on another website.
Roof vent pipe screens.
Helps prevent costly plumbing repairs by restricting animals debris and foreign objects from entering your plumbing system.
Shipping leadtime 1 3 business days.
3 pcs stainless steel wire mesh screen about 12 x 8inch 1mm hole 20 mesh easy to cut air vent mesh hard and heat resisting screen mesh window screen mesh 4 4 out of 5 stars 75 11 77 11.
The new dryerjack is the most efficient.
The position and curvature of the damper combined with hood size and collar placement optimize airflow to such a degree that laboratory tests confirm nearly zero reduction in airflow.
906 6 lead see table 1701 1 sheet lead shall comply with the following.
For safe pans not less than 4 pounds per square foot lb ft 2 19 kg m 2 or 1 16 of an inch 1 6 mm thick.
They are open at the top and are not capped.
Common 1 4 screens are ineffective and should be replaced or retrofitted.
22 5 long x 16 5 wide x 4 8 inches high.
Paintable to match your rooftop or vent pipe color or blend with your landscaping.
Gray painted galvanized steel.
Alternatively cover all existing vent openings with 1 8 inch or 1 16 inch wire mesh.
The less back pressure is created by the roof vent the more efficiently the system performs.
Roof vent guard plus animal screen gray 22 5 x 16 5 x 4 8 gray hy c company hy c vgp01 roof vent guard vent cover animal screen.
Oatey 1 1 2 in to 3 in x 15 in plastic vent and pipe flashing.
Builder s best 012633 galvanized steel roof vent cap with removable screen damper 6 diameter collar black 4 7 out of 5 stars 614 22 16 22.
Roof vent cover from start to finish.
I was looking at some various solutions to put a type of screen over them to keep out pests.
Use manufacured and ca approved vents see below to retrofit existing attic soffit basement foundation and gable vents where possible.
For pricing and availability.
50 sq in venting area.
1 1 2 and 2 pipe screen protectors or atrium grates fit schedule 40 pvc or abs fittings.
The plumber just finished his work and has run 2 3 pvc plumbing vent stacks exiting the back side of the house.