Mastic Structure Insulated Outside Corner Post, 1-1/4 in. x 4 in. x 12 ft., 21 Colors - image 1

Mastic Structure Insulated Outside Corner Post, 1-1/4 in. x 4 in. x 12 ft., 21 Colors - image 2

Mastic Structure Insulated Outside Corner Post, 1-1/4 in. x 4 in. x 12 ft., 21 Colors - image 3

Mastic Structure Insulated Outside Corner Post, 1-1/4 in. x 4 in. x 12 ft., 21 Colors - image 4

Mastic Structure Insulated Outside Corner Post, 1-1/4 in. x 4 in. x 12 ft., 21 Colors - image 5

Mastic Structure Insulated Outside Corner Post, 1-1/4 in. x 4 in. x 12 ft., 21 Colors - image 6

Mastic Structure Insulated Outside Corner Post, 1-1/4 in. x 4 in. x 12 ft., 21 Colors - image 7

Mastic Structure Insulated Outside Corner Post, 1-1/4 in. x 4 in. x 12 ft., 21 Colors - image 8

Mastic Structure Insulated Outside Corner Post, 1-1/4 in. x 4 in. x 12 ft., 21 Colors - image 9

Mastic Structure Insulated Outside Corner Post, 1-1/4 in. x 4 in. x 12 ft., 21 Colors - image 10

Mastic Structure Insulated Outside Corner Post, 1-1/4 in. x 4 in. x 12 ft., 21 Colors - image 11

Mastic Structure Insulated Outside Corner Post, 1-1/4 in. x 4 in. x 12 ft., 21 Colors - image 12

Mastic Structure Insulated Outside Corner Post, 1-1/4 in. x 4 in. x 12 ft., 21 Colors

Name: Mastic Structure Insulated Outside Corner Post, 1-1/4 in. x 4 in. x 12 ft., 21 Colors
Brand: Mastic
SKU: ALCSTCO4SC
Price: 78.5 USD
Availability: InStock

$78.50

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Mastic Structure Insulated Outside Corner Post, 1-1/4 in. x 4 in. x 12 ft., 21 Colors

The Mastic Structure Insulated Outside Corner is a 4 in. wide corner post with a 1-1/4 in. pocket that receives insulated siding, designed specifically for the Structure Home Insulation System. It comes in 1-1/4 in. x 4 in. x 12 ft. lengths across 21 Mastic colors, sold per piece or carton.

Key Features:

Wider 4 in. corners: Wider 4 in. corners add drama and substance to the home's exterior.
Insulated siding pocket: Features a 1-1/4 in. pocket to receive insulated siding panels.
System-matched: Specifically designed for use with the Structure Home Insulation System for a cleaner look.
Color matched: Matches Mastic Colors for coordinated lineals, corners and siding.
Full-length corners: 12 ft. lengths cover most story heights with few or no joints.
Distinctive detailing: Lineals and corner posts add a touch of elegance and distinctive style.

Specifications Table:

Specification	Details
Brand	Mastic
Sell unit	1 piece (or carton), 12 ft.
Product line	Structure Home Insulation System accessories
Material	Vinyl corner post accessory (insulated system component)
Available colors	21 Mastic colors including Scottish Thistle, Everest, Harbor Gray, Wicker, Linen, Pebblestone Clay, Silver Gray, Almond, Classic Cream, Desert, Wedgewood, Montana Suede, Rugged Canyon, Deep Granite, Misty Shadow, Victorian, Sandtone, Sage, Cameo, Autumn Harvest, Russet Red
Available sizes	1-1/4 in. x 4 in. x 12 ft.
Dimensions	1-1/4 in. x 4 in. x 12 ft.
Pocket size	1-1/4 in. to receive insulated siding
Coverage per unit	12 linear ft. per piece
Intended use	Outside corner detailing with the Structure insulated siding system

Coverage & How Much You Need:

One 12 ft. piece covers 12 linear ft. of outside corner; measure total corner height on each elevation and order full-length pieces where possible to avoid joints.

Fit and Compatibility:

Designed for use with the Mastic Structure Home Insulation System, with a 1-1/4 in. pocket that receives the insulated siding. Colors match Mastic's palette; crown molding and lineals in the same system can be added for further detail. Not for use with non-insulated siding systems without confirming pocket fit.

Frequently Asked Questions (FAQ):

Q: What size is this corner post?
A: 1-1/4 in. x 4 in. x 12 ft., with a 1-1/4 in. pocket to receive insulated siding.

Q: How many colors are available?
A: Twenty-one Mastic colors, from Scottish Thistle and Everest to Deep Granite and Russet Red.

Q: Which siding system is it for?
A: It is specifically designed for use with the Mastic Structure Home Insulation System.

Q: How is it sold?
A: Per piece, with some colors supplied per carton; each unit is 12 ft. long.

Q: How much do I need?
A: Measure each outside corner height and total the linear feet, dividing by 12 ft. per piece with an allowance for cuts.

Q: Does it match my siding color?
A: It matches Mastic Colors; confirm your siding color name against the 21 available options.

Expert Verdict — Reviewed by the SuperArbor Pro Desk

Use the 4 in. insulated corner to give insulated siding a substantial, framed look at building corners. Keep corners, lineals and siding from the same Structure system so colors and pocket dimensions align. On two-story walls, plan the butt joint location at a consistent height across elevations for a crisp, professional finish.

Install corner posts plumb and per the manufacturer's fastening and expansion-gap instructions so panels can move with temperature changes.

Complete your Structure insulated siding with the Mastic Structure Insulated Outside Corner in your matching color.

*Third Party Trademarks

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.

Subject to Approval & Availability
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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Mastic Structure Insulated Outside Corner Post, 1-1/4 in. x 4 in. x 12 ft., 21 Colors

Mastic Structure Insulated Outside Corner Post, 1-1/4 in. x 4 in. x 12 ft., 21 Colors

Key Features:

Specifications Table:

Coverage & How Much You Need:

Fit and Compatibility:

Frequently Asked Questions (FAQ):

Expert Verdict — Reviewed by the SuperArbor Pro Desk

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