Mastic Aluminum Square A Gutter Elbow, 2 in. x 3 in. / 3 in. x 4 in., .019 Aluminum

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Mastic Aluminum Square A Gutter Elbow, 2 in. x 3 in. / 3 in. x 4 in., .019 Aluminum


This Mastic aluminum Square A elbow directs water from the gutter outlet into the downspout or angles drainage away from the foundation at the downspout bottom. Available in 2 in. x 3 in. or 3 in. x 4 in. sizes, .019 aluminum, in London Brown or 52 Pebstone Clay.


Key Features:

  • Aluminum build: Formed from durable .019 gauge aluminum that resists rust and everyday wear.
  • Square A profile: A-style square elbow connects the gutter to the downspout at the roof line.
  • Downspout sizes: Offered in 2 in. x 3 in. and 3 in. x 4 in. square downspout sizes.
  • Color matching: London Brown and 52 Pebstone Clay finishes complement matching gutter and downspout components.
  • Foundation protection: Use at the downspout bottom to direct drainage away from the foundation.

Specifications Table:

Specification Details
Brand Mastic
Sell unit 1 piece (3 in. x 4 in. London Brown) or 1 carton (2 in. x 3 in. Pebstone Clay)
Product line Aluminum gutter fittings
Material Aluminum
Available colors London Brown, 52 Pebstone Clay
Available sizes 2 in. x 3 in., 3 in. x 4 in.
Dimensions 2 in. x 3 in. or 3 in. x 4 in. square profile
Thickness .019 in. aluminum
Elbow type Square A (front) elbow
Intended use Connects gutters to downspouts; directs drainage away from the foundation at the downspout base

Fit and Compatibility:

Fits Mastic aluminum square downspouts in matching 2 in. x 3 in. or 3 in. x 4 in. sizes; pair with matching Square B elbows for lateral offsets. Downspouts and gutter sections are sold separately.


Frequently Asked Questions (FAQ):

Q: What is an A elbow used for?
A: An A elbow turns the downspout frontwise, typically connecting the gutter outlet to the downspout or directing flow away from the wall.


Q: What sizes are available?
A: This line includes 2 in. x 3 in. and 3 in. x 4 in. square elbows in .019 aluminum.


Q: What colors does it come in?
A: London Brown and 52 Pebstone Clay.


Q: How many do I need per downspout?
A: Typically one A elbow at the gutter outlet, plus additional elbows at the bottom to kick drainage away from the foundation.


Q: Will it rust?
A: No, it is made of aluminum, which is rust-resistant and easy to maintain.


Expert Verdict — Reviewed by the SuperArbor Pro Desk

Match elbow size exactly to your downspout: 2 in. x 3 in. for smaller roofs, 3 in. x 4 in. where higher water volume demands it. Pair an A elbow at the top with a B elbow at the bottom to angle discharge away from the foundation. Screw seams rather than crimping alone to keep joints tight over time.

Work from a stable ladder with three points of contact when installing or adjusting gutter and downspout fittings.


Order Mastic aluminum Square A elbows and route your downspout drainage cleanly away from the foundation.

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All orders are reviewed before fulfillment. You are not charged until your order is approved and ready to ship — and you may cancel at any time before that at no cost.

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