Gibraltar Building Products 4-in x 0.75-in Aluminum Vent and Pipe Flashing (Code Cap Base)

Regular price $9.40

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4-in Aluminum Vent/Pipe Flashing Base

Durable aluminum base flashing designed for 4-in exhaust vent pipes. Features a nailing flange and fixed tabs to securely accept a compatible code cap, conforming to various roof slopes and tile profiles.


Key Features:

  • Secure Code Cap Fit: Three fixed tabs on the cone hold the top cap firmly for reliable ventilation
  • Durable Aluminum Construction: 0.025-in aluminum resists corrosion and conforms to S-style Spanish tile roofs
  • Easy Roof Integration: Nailing flange simplifies installation on flat to 5/12 pitch roofs
  • Versatile Exhaust Use: Fits 4-in pipes for kitchen, bath, laundry, and water heater vents
  • Service-Friendly Design: Bases sold separately so tops can be replaced without disturbing the base

Specifications Table:

Specification Details
Primary Material Aluminum (Type 3003, 24 gauge)
Thickness 0.025 in
Fits Pipe Size 4 in
Color/Finish Family Silver
Manufacturer Color/Finish Silver
Length (Inches) 27.25
Width (Inches) 21.25
Maximum Temperature (F) 180
Warranty None
UNSPSC 30151600
Design Features Nailing flange; three fixed tabs for cap alignment; adjustable to roof slope
Application Kitchen, laundry, bath, water heater exhaust pipes
Prop 65 Warning Yes

Frequently Asked Questions (FAQ):

Q: What pipe size does this base fit?
A: It is designed for 4-inch exhaust vent pipes.


Q: Is the top cap included?
A: No. The base and cap are sold separately; this listing is for the base flashing only.


Q: What roof pitches can it be used on?
A: Code cap and base combinations are adjustable for flat roofs up to 5/12 pitch.


Q: What material is it made from?
A: 24-gauge Type 3003 aluminum with a 0.025-inch thickness.


Q: How is it installed?
A: Shingle up to the exhaust pipe, slip the base flashing on, secure with roofing nails, align the cap slots with the base tabs, lower the cap, level, and bend tabs to lock it in place.


A Sleek, Functional Accent for a Clean Roofline

This aluminum vent base brings a crisp, architectural note to the roof while quietly doing the hard work of channeling exhaust. The polished, minimal profile and neatly formed tabs create a refined, utilitarian elegance. Pair it with a matching cap to keep the roofscape cohesive and streamlined, especially against warm-toned shingles. It’s a small detail that elevates the whole exterior—smart, subtle, and essential to luxurious living.


Upgrade your venting with this durable aluminum base and enjoy a cleaner, dependable roof installation—add to cart today.

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