ACM Aluminum Code Cap Assembly, 4 in. to 8 in., Regular or Shake Profile, Mill Finish

Regular price $73.00

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ACM Aluminum Code Cap Assembly, 4 in. to 8 in., Regular or Shake Profile, Mill Finish


This ACM Aluminum Code Cap Assembly is a complete fixed exhaust vent cap and base unit for roof ventilation, available in 4, 6 and 8 inch sizes with Regular or Shake profiles in a mill finish. It provides code-required exhaust venting at the roof surface. Sold individually as one piece.


Key Features:

  • Complete assembly: Cap and base supplied together as a ready-to-install exhaust vent assembly.
  • Three sizes: Available in 4, 6 and 8 inch duct sizes.
  • Two profiles: Choose Regular or Shake profile to match the roof covering.
  • Aluminum build: Aluminum construction with mill finish resists corrosion.
  • Fixed exhaust venting: Designed as a fixed roof exhaust vent for code-required ventilation.

Specifications Table:

Specification Details
Brand ACM
Sell unit 1 piece
Product line Aluminum Code Cap Assembly
Available colors ['Regular Mill', 'Shake Mill']
Available sizes ['4 in.', '6 in.', '8 in.']
Material Aluminum
Finish / texture Mill
Intended use Fixed roof exhaust vent
Category Fixed Roof Exhaust Vents

Fit and Compatibility:

ACM code cap assemblies pair with ACM Aluminum Code Cap Bases and Tops in matching sizes and profiles. Match the cap size to the duct opening and the profile to the surrounding roof covering.


Frequently Asked Questions (FAQ):

Q: What sizes are available?
A: 4, 6 and 8 inch sizes in both Regular and Shake mill-finish profiles.


Q: Is the cap and base included?
A: Yes, the assembly includes cap and base as one unit; separate bases and tops are also available in the ACM code cap line.


Q: What is it made of?
A: Aluminum with a mill finish.


Q: How do I choose a size?
A: Match the vent size to the duct opening and required ventilation capacity.


Q: How many pieces do I need?
A: Each assembly vents one opening; quantity depends on your attic ventilation calculation and duct layout.


Expert Verdict — Reviewed by the SuperArbor Pro Desk

Choose the Regular profile for standard roof coverings and the Shake profile where a shake-profile match is needed. Size the vent to the duct diameter and verify the assembly against your attic ventilation calculation. Aluminum mill finish suits jobs where the vent is not required to match a painted roof color.

Follow the vent manufacturer's installation instructions and maintain required clearances when working around duct connections on the roof.


Order the ACM Aluminum Code Cap Assembly in your size and profile to complete your roof exhaust venting.

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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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