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Free Delivery on All Orders Over $75 - Curbside Delivery in 7-10 Days
Free Delivery on All Orders Over $75 - Curbside Delivery in 7-10 Days

DuraVent DuraTech Square Ceiling Support Box

SKU 5DT-CS11-2
Original price $329.86 - Original price $456.39
Original price
$329.86
$329.86 - $456.39
Current price $329.86

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DuraVent DuraTech Square Ceiling Support Box

Introducing the DuraVent DuraTech Square Ceiling Support Box—a robust solution for supporting chimney pipes in flat, cathedral, and short attic spaces.


Key Features

  • Versatile Application: Suitable for flat and cathedral (A-Frame) ceilings and short attic spaces.
  • Secure Connection: The built-in twist-lock mechanism ensures a positive connection between the support box and the chimney.
  • Standard Fit: Fits between standard 16” on-center joists and is compatible with most home applications.
  • High Capacity: Supports up to 60 feet of DuraTech Chimney.
  • Complete Kit: Includes a 2” wide trim collar painted black for a sleek finish.
  • Integrated Adapter: Accepts both single-wall and double-wall stovepipe connections.

Product Features

  • Durable Construction: Crafted from high-quality materials to ensure longevity and reliable performance in various ceiling configurations.
  • Easy Installation: Designed for straightforward installation, fitting seamlessly between standard 16” on-center joists without the need for additional framing.
  • Aesthetic Design: The black painted finish and included trim collar provides a clean and professional appearance, complementing any interior decor.
  • Safety Compliance: Engineered to meet industry safety standards, providing peace of mind during operation.

Product Specifications

Size Connecting Pipe Size Width (inches) Height (inches) Order # Stock #
*5” 5” 11” 11” 5DT-CS11-2 810018487
6” 6” 12” 11” 6DT-CS11-2 810018488
6” 6” 12” 24” 6DT-CS24-2 810018492
6” 6” 12” 36” 6DT-CS36-2 810018496
7” 7” 13” 11” 7DT-CS11-2 810018489
7” 7” 13” 24” 7DT-CS24-2 810018493
7” 7” 13” 36” 7DT-CS36-2 810018497
8” 8” 14 1/4” 11” 8DT-CS11-2 810018490
8” 8” 14 1/4” 24” 8DT-CS24-2 810018494
8” 8” 14 1/4” 36” 8DT-CS36-2 810018499

*Note: The 5” connecting pipe size is only available at 11” height.

Ceiling Pitch Compatibility

DuraBlack DVL Recommended Support Box Height
0/12 - 4/12 0/12 - 6/12 11” Support Box
5/12 - 9/12 7/12 - 13/12 24” Support Box
10/12 - 14/12 14/12 - 20/12 36” Support Box

Ensure proper selection of support box height based on your ceiling pitch for optimal installation and performance.

Product Downloads

Why Buy from Us?

Customer Service: Real People. Real Support

Our customer support team is based out of our home office in Southeastern Ohio. When you contact us, you will speak with a real person who is dedicated to assisting you in any way possible. There are no robots, teleprompts, or language barriers here.

Small Business Values

We are not a giant corporation that is only interested in its bottom line. As a small business, we aim to provide quality fire products at the best price possible. We want to give you a quality product at our best price. Your experience is more important to us than how much profit we will make from your purchase.

Ongoing Support

We continue our dedication to customer service even after your product has been delivered. We're always here to help! Whether you need an accessory, have questions about your purchase, or you are looking for parts... we're here to help!

Best Prices, Period.

We don't believe you should have to wait for a special holiday sale or "door buster" event. We always sell our products at the lowest possible price. And if you find a lower price elsewhere, we not only match it. We'll beat it!

Customer Service: Real People. Real Support

Our customer support team is based out of our home office in Southeastern Ohio. When you contact us, you will speak with a real person who is dedicated to assisting you in any way possible. There are no robots, teleprompts, or language barriers here.

Small Business Values

We are not a giant corporation that is only interested in its bottom line. As a small business, we aim to provide quality fire products at the best price possible. We want to give you a quality product at our best price. Your experience is more important to us than how much profit we will make from your purchase.

Ongoing Support

We continue our dedication to customer service even after your product has been delivered. We're always here to help! Whether you need an accessory, have questions about your purchase, or you are looking for parts... we're here to help!

Best Prices, Period.

We don't believe you should have to wait for a special holiday sale or "door buster" event. We always sell our products at the lowest possible price. And if you find a lower price elsewhere, we not only match it. We'll beat it!