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IPS Multi-Size 3N1 Aluminum Base Roof Vent Pipe Flashing, 1"–3" Pipe, Black or Brown
Regular price $13.53Orders start at $399 — combine any items to reach the minimum. Learn more
IPS Multi-Size 3N1 Aluminum Base Roof Vent Pipe Flashing, 1"–3" Pipe, Black or Brown
The IPS Multi-Size 3N1 is a vent pipe base flashing with a 25 mil aluminum base and a flexible elastomer collar that fits 1-1/4 in. to 3 in. vent pipes on roof pitches up to 45 degrees. Approved for type "B" installations, it is sold as one flashing per each and is available in Black or Brown to match common shingle colors. Pair it with matching IPS pipe flashings and standard shingle installation practice.
Key Features:
- Multi-Size Collar: One elastomer collar fits vent pipes from 1-1/4 in. through 3 in., so a single flashing covers multiple pipe sizes.
- Aluminum Base: The base is formed from 25 mil aluminum for a lightweight yet durable flange.
- Steep Pitch Capable: Fits any roof pitch to 45 degrees, with 1-1/2 in. and 2 in. vent pipe applications allowing a pitch range beyond 45 degrees.
- Weather Tested: Tested for ultraviolet, ozone and weather resistance for long service life.
- Type B Approved: Approved for type "B" installations on eligible vent systems.
- Heat Rated Collar: The elastomer collar is heat tested to 180 degrees F.
- Lifetime Coverage: Backed by a Limited Lifetime Warranty for the life of the current roof system.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | IPS |
| Sell unit | 1 flashing |
| Product line | Multi-Size 3N1 |
| Available colors | Black, Brown |
| Available sizes | 1" to 3" vent pipe |
| Material | 25 mil aluminum base with elastomer collar |
| Color / finish | Black or Brown |
| Nominal size | Fits 1-1/4 in. to 3 in. vent pipe |
| Base thickness | 25 mil |
| Pitch range | Any pitch to 45° (1-1/2 in. and 2 in. pipe allow beyond 45°) |
| Temperature rating | Collar heat tested to 180°F |
| Approvals | Approved for type "B" installations |
| Warranty | Limited Lifetime Warranty for the life of the current roof system |
| Intended use | Residential roof vent pipe flashing |
| Assembly | Install under shingles with base flange lapped per standard pipe flashing practice |
Coverage & How Much You Need:
One flashing covers a single vent pipe penetration from 1-1/4 in. to 3 in. diameter. Count each pipe penetration on the roof and order one flashing per pipe in the color matching the shingles.
Fit and Compatibility:
Works with standard composition shingle roof systems and type "B" vent installations. Choose Black or Brown to match the roof color; other flashing accessories are sold separately.
Frequently Asked Questions (FAQ):
Q: What pipe sizes does one flashing fit?
A: The multi-size elastomer collar fits vent pipes from 1-1/4 in. through 3 in. in diameter, eliminating the need to stock a flashing for each size.
Q: What is included in the box?
A: Each unit is one complete pipe flashing with aluminum base and elastomer collar.
Q: Which color should I choose?
A: Black and Brown are the available colors; most installers match the flashing color to the shingle color for a low-profile look.
Q: Can it be used on steep roofs?
A: It fits any roof pitch to 45 degrees, and 1-1/2 in. and 2 in. vent pipe applications allow for a pitch range beyond 45 degrees.
Q: Is it rated for hot vent systems?
A: Yes, it is approved for type "B" installations and the elastomer collar is heat tested to 180 degrees F.
Q: How is it installed?
A: Slide the flashing over the pipe and install with the base lapped into the shingle courses above the penetration, following standard pipe flashing practice.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
The multi-size collar is a practical choice for service work and remodels because one unit covers 1-1/4 in. to 3 in. pipe, reducing truck stock. Match the base color to the shingles for appearance, and verify pitch conditions on 1-1/2 in. and 2 in. pipe where the manufacturer allows beyond 45 degrees. Always lap the base properly into the course above the pipe to keep water on the flashing surface.
Roof installations involve fall hazards; use appropriate fall protection and take care around hot type "B" vent pipes during installation.
Order the IPS Multi-Size 3N1 Aluminum Base Pipe Flashing today and cover your vent penetrations with one multi-size unit.
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