Skip to content
IPS Multi-Size 4N1 Galvanized Base Pipe Flashing, Fits 1-1/4 in. to 4 in. Pipes, Black or Gray
Regular price $389.50Orders start at $399 — combine any items to reach the minimum. Learn more
IPS Multi-Size 4N1 Galvanized Base Pipe Flashing, Fits 1-1/4 in. to 4 in. Pipes, Black or Gray
The IPS Multi-Size 4N1 flashing combines a large galvanized base with a flexible, UV- and weather-resistant PVC collar to seal vent pipes from 1-1/4 in. to 4 in. diameter. One flashing replaces four sizes, available in black or gray. It is sold per carton in black and per each in gray.
Key Features:
- 4 sizes in 1: One flashing fits pipes from 1-1/4 in. to 4 in., eliminating inventory of multiple collar sizes.
- Water-tight collar: The flexible PVC collar conforms to vent pipes to create a water-tight seal.
- Large nailing flange: A large base and nailing flange provide extra coverage in freeze-thaw climates.
- UV and weather resistance: The multi-size 4N1 collar is manufactured for maximum durability with ultraviolet and weather resistance.
- Lifetime coverage: Backed by a Limited Lifetime Warranty for the life of the current roof system.
- Two color choices: Offered in black and gray to match common vent pipe and roofing colors.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | IPS |
| Sell unit | Black: 1 carton; Gray: 1 flashing |
| Product line | IPS Multi-Size 4N1 Galvanized Base Roof Flashing |
| Available colors | Black; Gray |
| Available sizes | Fits 1-1/4 in. to 4 in. pipes |
| Material | Galvanized steel base with flexible PVC collar |
| Finish / texture | Black or gray collar over galvanized base |
| Pipe size range | 1-1/4 in. to 4 in. |
| Intended use | Pipe/vent flashing on residential pitched roofs |
| Warranty | Limited Lifetime Warranty for the life of the current roof system |
Coverage & How Much You Need:
One flashing covers a single vent pipe from 1-1/4 in. to 4 in. diameter. Count the penetrations on the roof and select one flashing per pipe; the multi-size collar eliminates sizing each pipe individually.
Fit and Compatibility:
Fits standard round vent pipes from 1-1/4 in. through 4 in. diameter on shingled residential roofs. Install under upper shingle courses with the nailing flange sealed per roofing best practice.
Frequently Asked Questions (FAQ):
Q: What pipe sizes does it fit?
A: The 4N1 collar fits pipes from 1-1/4 in. up to 4 in. diameter, covering four conventional flashing sizes in one unit.
Q: What colors are available?
A: Black and gray; the black version sells by the carton and the gray version by each.
Q: Is the collar durable in sunlight?
A: Yes, the PVC collar is manufactured with ultraviolet and weather resistance for maximum durability.
Q: Why a large base?
A: The large base and nailing flange provide extra coverage, which is especially valuable in freeze-thaw climates.
Q: Is there a warranty?
A: Yes, a Limited Lifetime Warranty for the life of the current roof system is stated by the manufacturer.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
A multi-size flashing like the 4N1 is the right call for service trucks and remodels where you never know the pipe diameter until you are on the roof. Set the base in a full bed of flashing cement, work the flexible collar down over the pipe, and keep the top edge of the base above the shingle exposure line so water sheds, not pools. In freeze-thaw climates the extra base coverage helps keep the seal intact through seasonal movement.
Install flashing from the roof with fall protection, cut shingles carefully with a sharp utility knife, and seal the flange per the roof system's requirements.
Order the IPS Multi-Size 4N1 pipe flashing and cover every 1-1/4 in. to 4 in. vent pipe with one unit.
All third party trademarks, including logos and icons, referenced on our website and product pages remain the property of their respective owners. Unless specifically identified as such, Arbor's use of third party trademarks does not indicate any relationship, affiliation, sponsorship, or endorsement between Arbor Home and the owners of these trademarks. Any references by Arbor Home to third party trademarks are to identify the corresponding third party goods.
