Custom Knockdown Style Stainless Steel Multi Flue Hinged Chimney Cap

A knockdown-style multi-flue hinged chimney cap provides dependable protection for multiple chimney flues while simplifying shipping, assembly, installation, and future maintenance. The cap helps protect the chimney and flue openings from rain, snow, debris, pests, and nesting birds.

Designed for top-mount installation, the cap attaches directly to the chimney crown or brick using the included chimney-top adhesive and Tapcon masonry screws. The removable hinged lid provides convenient access to the flues for chimney cleaning, inspection, and routine maintenance.

Knockdown Multi-Flue Chimney Cap Features

• Knockdown Design: The cap ships in flat, unassembled sections to reduce shipping costs and help prevent damage to the mesh and lid during transit.
• Hinged Removable Lid: The lid can be unclasped and opened for convenient access to the chimney flues without removing the entire cap from the masonry.
• Multi-Flue Protection: One chimney cap can cover multiple flue openings while helping prevent rain, snow, debris, birds, and pests from entering the chimney.
• Top-Mount Installation: Hinged mounting flanges attach directly to the top of the chimney crown or brick.
• Installation Hardware Included: Each cap includes chimney-top adhesive and Tapcon masonry screws for installation.
• Multiple Screen Heights: Five available screen heights help provide the necessary clearance above the tallest flue tile.

What Is a Knockdown-Style Multi-Flue Hinged Chimney Cap?

A knockdown-style chimney cap is shipped in separate, flat sections rather than as one fully assembled unit. The components are assembled on-site using standard fasteners before the cap is mounted to the chimney crown.

This design reduces the amount of space required during shipping and helps lower the risk of the chimney-cap lid or mesh being bent in transit. Once properly assembled and installed, the cap provides the same intended protection and performance as a comparable pre-assembled multi-flue cap.

Why Choose a Multi-Flue Chimney Cap?

A multi-flue chimney cap covers multiple flue openings with one protective assembly. This can provide a cleaner appearance and eliminate the need to install a separate cap on each individual flue.

A properly sized cap helps protect the chimney system from water, snow, falling debris, and wildlife while maintaining the clearance needed for exhaust gases to exit the flues.

Common Applications

• Chimneys with multiple clay flue tiles
• Residential masonry chimneys
• Chimneys requiring top-mount installation
• Chimneys with flues of different heights
• Replacement of damaged or deteriorated multi-flue caps
• Projects requiring easier access for cleaning and inspection

Multi-Flue Chimney Cap Specifications

How to Measure for a Top-Mount Multi-Flue Chimney Cap

Accurate measurements are essential for proper installation. Measure the outside dimensions of the chimney crown or brick surface where the mounting flanges will sit.

Step 1: Measure the Chimney Length and Width

Measure the total outside length and width of the chimney. Subtract 3 inches from both measurements to account for the two 1.5-inch hinged mounting flanges.

For example, if the chimney crown measures 30 inches wide by 48 inches long, the corresponding cap dimensions would be 27 inches wide by 45 inches long.

Step 2: Measure the Tallest Flue Tile

Measure from the top of the chimney crown to the top of the tallest flue tile. A recommended minimum clearance of 6 inches should remain between the tallest flue tile and the underside of the cap lid to support proper exhaust drafting.

Select the appropriate screen height based on the tallest flue tile. Five screen-height options are available to accommodate different chimney configurations.

Step 3: Confirm the Mounting Surface

Confirm that the chimney crown or brick provides a suitable, stable mounting surface for the hinged flanges, free of broken or damaged masonry and debris. The cap mounts directly to this surface using the included adhesive and Tapcon masonry screws.

Top-Mount Chimney Cap Installation

Assemble the knockdown chimney cap according to the supplied instructions before positioning it on the chimney. Fold the hinged mounting flanges outward and place the cap on the chimney crown or brick.

Secure the mounting strips using the included chimney-top adhesive and Tapcon masonry screws. Confirm that the cap is level, securely attached, and properly positioned around all flue openings.

Maintain at least 6 inches of clearance between the top of the tallest flue tile and the cap lid. Installation must also comply with applicable chimney, fireplace, venting-system, and local building-code requirements.

Benefits of a Hinged Chimney Cap Lid

A hinged lid provides direct access to the chimney flues for cleaning, inspection, and maintenance. The lid can be unclasped and opened without removing the cap base or detaching the mounting flanges from the chimney crown.

This design can save time during routine chimney service and reduce the need to repeatedly remove and reinstall the complete multi-flue cap.

Knockdown vs. Pre-Assembled Multi-Flue Chimney Caps

Commercial and Community Project Discounts

We can accommodate residential, commercial, community, and multi-unit projects. Orders of 10 or more multi-flue chimney caps qualify for a discount

Call 1-877-486-8119 for pricing.

Knockdown Multi-Flue Chimney Cap FAQs

Why choose a knockdown chimney cap instead of a pre-assembled cap?

A knockdown chimney cap ships in flat, unassembled sections. This can reduce shipping costs and help protect the mesh and lid from being bent or damaged during transit. The cap is assembled on-site using standard fasteners and provides its intended structural performance when properly assembled and installed.

What is the benefit of a hinged chimney cap lid?

The hinged lid can be unclasped and opened to provide unobstructed access to the chimney flues. This makes routine cleaning, inspection, and maintenance easier because the entire cap does not need to be removed from the chimney crown.

How do I measure for a knockdown multi-flue chimney cap?

Measure the total outside length and width of the chimney. Subtract 3 inches from both dimensions to account for the two 1.5-inch hinged mounting flanges that rest on the chimney crown.

How much clearance is needed above the flue tiles?

A recommended minimum clearance of 6 inches should remain between the top of the tallest flue tile and the underside of the chimney-cap lid. Five screen heights are available to accommodate different flue configurations.

How is the chimney cap mounted?

This is a top-mount chimney cap. The hinged mounting strips attach directly to the chimney crown or brick using the included chimney-top adhesive and Tapcon masonry screws.

Are the adhesive and mounting screws included?

Yes. Chimney-top adhesive and Tapcon masonry screws are included with each cap.

Can one cap cover multiple flue openings?

Yes. The cap is designed to protect multiple flue openings under one top-mounted chimney-cap assembly.

Does the cap protect against birds and pests?

The screened multi-flue cap helps reduce opportunities for birds, nesting animals, pests, leaves, and other debris to enter the chimney openings.

Do you offer discounts for large multi-flue cap orders?

Yes. Orders of 10 or more multi-flue covers qualify for discounts ranging from 10% to 25%. Call 1-877-486-8119 for details.