Corey Breed, Vent Cap Inventor, is applying the new patent pending Duct Ninja;
Duct Ninja™ Return Grille Seal for Duct Leakage Testing
Corey Breed, Vent Cap Inventor, is applying the new patent pending Duct Ninja;
Duct Ninja™ Return Grille Seal for Duct Leakage Testing

Duct Ninja™ Return Grille Seal for Duct Leakage Testing

Duct Ninja™ Return Grille Seal The Duct Ninja™ is a reusable return grille sealing system designed for duct leakage testing under depressurization. Instead of climbing ladders and taping plastic over return grilles, technicians can seal the grille from the floor using a pole-mounted frame and tensioned sealing sheet. The result is faster setup, cleaner tests, and no disposable tape waste. Watch Duct Ninja™ in Action Frame Update followed by real field setup showing the patent pending Duct Ninja™ sealing a return grille during duct leakage testing. Why the Duct Ninja Exists Sealing supply registers during duct testing is easy with...
$ 650.00
$ 650.00
Description
Description
x

Duct Ninja™ Return Grille Seal

The Duct Ninja™ is a reusable return grille sealing system designed for duct leakage testing under depressurization.

Instead of climbing ladders and taping plastic over return grilles, technicians can seal the grille from the floor using a pole-mounted frame and tensioned sealing sheet.

The result is faster setup, cleaner tests, and no disposable tape waste.

Watch Duct Ninja™ in Action

Frame Update followed by real field setup showing the patent pending Duct Ninja™ sealing a return grille during duct leakage testing.

Why the Duct Ninja Exists

Sealing supply registers during duct testing is easy with Vent Caps.

Return grilles are the part that slows every technician down.

  • Ladders
  • Tape
  • Plastic
  • Time wasted sealing drywall instead of testing ducts

The Duct Ninja solves this by sealing the return grille quickly from the floor.

Current Production Design

  • Rigid frame for consistent sealing
  • Full-size Ninja Skin™ sheet
  • Simple setup with fewer parts
  • Compatible with standard painter's extension poles
  • In stock and ready to ship

Why Technicians Use It

  • Seal return grilles from the floor
  • Reduce ladder trips
  • Eliminate tape and plastic waste
  • Speed up duct leakage testing setup
  • Reusable equipment built for field work

Field Feedback

Maria West — Blower Door Queen

“The new cloth works 100 times better than the original. We don’t even use the clips anymore.”

“We’ve run about 10 tests since the update and everything works great. The solid bars are definitely the way to go.”

Brett White — Southern Valley Services

“The new setup worked great. It was significantly less leakage than tape.”

“It sucked right up to the return grille.”

Ideal For

  • Home performance contractors
  • HVAC testing crews
  • Energy auditors
  • HERS raters
  • Duct leakage testing workflows

Important: The Duct Ninja™ is designed for depressurization duct leakage testing.

It works by drawing the Ninja Skin™ sheet into the return grille using airflow.

What’s Included

  • Duct Ninja™ frame
  • Ninja Skin™ sealing sheet
  • Central support beam
  • Assembly and setup video access

Extension poles sold separately.

No Version Regret Protection

Full-price purchases include update parts for up to two future revisions that materially improve durability or performance.

Update parts provided as needed. Does not include optional accessories.

Order Today

Seal return grilles faster, climb fewer ladders, and eliminate disposable tape from your duct testing workflow with the Duct Ninja™.

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Shipping & Return
Shipping & Return
x

Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

Field Results from Real Testers

Maria West — Owner, Blower Door Queen (FL)

“The new cloth works 100 times better than the original. We don’t even use the clips anymore.”

“We’ve run about 10 tests since the update and everything works great. The solid bars are definitely the way to go.”

Brett White — Southern Valley Services (AL)

“The new setup worked great. It was significantly less leakage than tape.”

“It sucked right up to the return grille.”

Watch First:

First Demo Video (Original Concept) Intro & Concept Overview = 0:00
Skip the Taping Portion → Go Straight Into Action Jump Ahead ≈ 1:21
Unboxing & Setup (Current Version) Full Setup Walkthrough
Ninja Placed with Fan Already Running Jump Ahead ≈ 6:17

Duct Ninja™ Return Grille Seal

The Duct Ninja™ is a reusable return grille sealing system designed for duct leakage testing under depressurization.

Instead of climbing ladders and taping plastic over return grilles, technicians can seal the grille from the floor using a pole-mounted frame and tensioned sealing sheet.

The result is faster setup, cleaner tests, and no disposable tape waste.

Watch Duct Ninja™ in Action

Frame Update followed by real field setup showing the patent pending Duct Ninja™ sealing a return grille during duct leakage testing.

Why the Duct Ninja Exists

Sealing supply registers during duct testing is easy with Vent Caps.

Return grilles are the part that slows every technician down.

  • Ladders
  • Tape
  • Plastic
  • Time wasted sealing drywall instead of testing ducts

The Duct Ninja solves this by sealing the return grille quickly from the floor.

Current Production Design

  • Rigid frame for consistent sealing
  • Full-size Ninja Skin™ sheet
  • Simple setup with fewer parts
  • Compatible with standard painter's extension poles
  • In stock and ready to ship

Why Technicians Use It

  • Seal return grilles from the floor
  • Reduce ladder trips
  • Eliminate tape and plastic waste
  • Speed up duct leakage testing setup
  • Reusable equipment built for field work

Field Feedback

Maria West — Blower Door Queen

“The new cloth works 100 times better than the original. We don’t even use the clips anymore.”

“We’ve run about 10 tests since the update and everything works great. The solid bars are definitely the way to go.”

Brett White — Southern Valley Services

“The new setup worked great. It was significantly less leakage than tape.”

“It sucked right up to the return grille.”

Ideal For

  • Home performance contractors
  • HVAC testing crews
  • Energy auditors
  • HERS raters
  • Duct leakage testing workflows

Important: The Duct Ninja™ is designed for depressurization duct leakage testing.

It works by drawing the Ninja Skin™ sheet into the return grille using airflow.

What’s Included

  • Duct Ninja™ frame
  • Ninja Skin™ sealing sheet
  • Central support beam
  • Assembly and setup video access

Extension poles sold separately.

No Version Regret Protection

Full-price purchases include update parts for up to two future revisions that materially improve durability or performance.

Update parts provided as needed. Does not include optional accessories.

Order Today

Seal return grilles faster, climb fewer ladders, and eliminate disposable tape from your duct testing workflow with the Duct Ninja™.

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