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TopShield All Purpose Louvered Cap, Mill Finish, 4" Vent Pipe Cover
Regular price $45.25Orders start at $399 — combine any items to reach the minimum. Learn more
TopShield All Purpose Louvered Cap, Mill Finish, 4" Vent Pipe Cover
The TopShield All Purpose Louvered Cap is a mill-finish metal vent cap for 4 in. pipes, sold as one piece. Its louvered design lets air exhaust while keeping rain, debris and pests out of the vent opening. It tops plumbing vents and other 4 in. roof penetrations on residential roofs.
Key Features:
- Louvered airflow: Louvered openings allow vent airflow while blocking rain and debris.
- Fits 4 in. pipe: Sized for standard 4 in. vent pipes.
- Mill finish: Mill finish metal can be left as-is or painted to match.
- All-purpose use: All-purpose design suits plumbing vents and similar penetrations.
- Pest exclusion: Helps keep birds and pests from nesting in open vent pipes.
- One-piece cap: Ships as a single piece ready to cap the pipe.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | TopShield |
| Sell unit | 1 piece |
| Product line | TopShield All Purpose Louvered Cap |
| Material | Metal |
| Color / finish | Mill |
| Available colors | Mill (1 item on this page) |
| Available sizes | 4" (1 item on this page) |
| Pipe size | 4 in. |
| Intended use | Pipe / vent flashing cap for residential roofs |
| Category | Residential Roofing > Flashing > Pipe Flashing |
Fit and Compatibility:
Fits 4 in. vent pipes on residential roof assemblies; pair with TopShield pipe flashing and boot products for the penetration seal. Fasteners are sold separately.
Frequently Asked Questions (FAQ):
Q: What pipe size does this cap fit?
A: It is sized for a 4 in. vent pipe.
Q: What is included?
A: One mill-finish louvered cap per sell unit; fasteners and the pipe boot below are separate.
Q: Does it restrict airflow?
A: The louvered openings are designed to let air pass while shedding rain and blocking debris.
Q: Can it keep pests out?
A: Yes, the louvered design helps prevent birds and pests from entering the vent.
Q: Can I paint it?
A: Mill-finish metal can be painted with a coating intended for metal surfaces.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
A louvered cap is a simple upgrade over an open pipe: it stops rain from splashing down the stack and keeps out nesting birds without meaningfully choking airflow. Verify the cap's 4 in. fit against your actual pipe OD before ordering. On exposed installations, a painted metal cap will hold color far better than bare mill.
Roof vent work should be done with fall protection in place; metal cap edges can be sharp, so wear gloves.
Cap your 4 in. vent pipe with the TopShield All Purpose Louvered Cap.
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