Radon Pipe Guard / Varmint Guard – 4" Schedule 40 PVC Vent Cap with Stainless Steel Screen

Radon Pipe Guard & Varmint Guard – 4" Schedule 40 PVC | Stainless Steel Mesh Screen

Protect your radon mitigation system from rodents, birds, insects, and debris with this 4" Schedule 40 PVC pipe guard. Also known as a varmint guard, critter guard, vent cap, pipe cap, rain cap, exhaust cap, termination cap, or discharge screen — this is the industry-standard pipe end protection used by certified radon mitigators across Canada and the United States.

This pipe guard fits over the exterior of standard 4" Schedule 40 PVC pipe and features a durable ½" stainless steel mesh that allows full radon exhaust airflow while blocking animals, leaves, hail, pine cones, and other debris from entering the discharge pipe and damaging your radon fan motor.

Features

• Fits standard 4" Schedule 40 PVC pipe (4.5" OD)
• ½" stainless steel mesh screen — corrosion-resistant and built to last
• Includes 2 stainless steel screws for secure attachment
• Maintains proper exhaust airflow while blocking pests and debris
• Reduces costly service calls caused by animal intrusion or fan blockage
• Quick, tool-minimal installation — slides over pipe end and screws in place

Why You Need a Pipe Guard on Every Radon System

An unprotected radon discharge pipe is an open invitation for squirrels, birds, mice, wasps, and other pests to enter and nest inside the pipe or fan housing. This is one of the most common — and most preventable — causes of radon fan failure. A pipe guard is an inexpensive insurance policy that protects your fan investment and keeps the system running reliably.

Also Commonly Called

Radon vent cap, varmint guard, critter guard, pipe screen cap, fan pipe cap, radon rain cap, exhaust vent cap, termination cap, PVC pipe screen, roof vent cap, discharge guard, pest guard, rodent guard, pipe end cap with screen.

Compatibility

Fits all standard 4" Schedule 40 PVC radon mitigation discharge pipes. Also works with Schedule 20 and Schedule 80 4" PVC with screw adjustment. Sold individually. Contact us for bulk/case pricing (200/case).