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Art's Sheet Metal Mfg. 4" Fan Jack with Regular Base, 4/12 Pitch, 1-Piece Galvanized Roof Vent Flashing
Regular price $34.18Orders start at $399 — combine any items to reach the minimum. Learn more
Art's Sheet Metal Mfg. 4" Fan Jack with Regular Base, 4/12 Pitch, 1-Piece Galvanized Roof Vent Flashing
This is Art's Sheet Metal Mfg.'s 4" fan jack flashing with a regular base formed for 4/12 roof pitches, supplied as a 1-piece unit. The galvanized sheet-metal boot flashes around a 4" vent pipe as it penetrates the roof plane. Sold as a single piece weighing approximately 2.75 lb.
Key Features:
- Fits 4" vents: Formed to flash a 4" diameter vent pipe penetration.
- 4/12 regular base: Regular base design is intended for 4/12 roof pitch applications.
- One-piece form: Ships as a single fabricated piece with no assembly required.
- Galvanized metal: Fabricated from galvanized sheet metal for corrosion resistance on the roof.
- Lightweight unit: Each piece weighs approximately 2.75 lb for easy handling on the roof.
- Made by Art's: Fabricated by Art's Sheet Metal Mfg., a dedicated sheet-metal flashing manufacturer.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Art's Sheet Metal Mfg. |
| Manufacturer model | 4FJR4412 |
| Sell unit | 1 piece |
| Product line | Fan Jack |
| Profile / style | Fan jack, regular base, 1-piece |
| Pipe size | 4 in. |
| Roof pitch | 4/12 |
| Material | Galvanized sheet metal |
| Weight | 2.75 lb per piece |
| Assembly | One-piece, no assembly |
| Intended use | Vent pipe flashing at roof penetrations |
Fit and Compatibility:
Designed for 4" diameter vent pipes installed through a 4/12 pitch roof. Pair with compatible pipe boots and sealant per the roofing manufacturer's instructions; steep-pitch or other-size applications require a different base or boot.
Frequently Asked Questions (FAQ):
Q: What pipe size does this fan jack fit?
A: It is formed for a 4" diameter vent pipe penetration.
Q: What roof pitch is the regular base made for?
A: The regular base is designed for 4/12 pitch roofs.
Q: Is this sold as a single piece or a pack?
A: It is sold as one piece per selling unit.
Q: Does it need assembly?
A: No, it is supplied as a 1-piece fabricated flashing.
Q: How much does one piece weigh?
A: Approximately 2.75 lb per piece.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Match the fan jack base to the actual roof pitch before ordering; the regular base here suits 4/12 slopes, while low-slope or steep-slope decks call for alternate bases. Install in shingle courses so the flange laps over underlayment below and under shingles above, and seal the flange per the roofing manufacturer's details. For non-standard pitches or larger pipe diameters, select the corresponding Art's base or boot size instead.
Work safely on sloped roofs using fall protection, and seal all flange edges to keep water out of the penetration.
Order the Art's Sheet Metal Mfg. 4" Fan Jack Regular Base for your 4/12 vent penetrations today.
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