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- USA
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Ships within 48 hours · Estimated delivery Jun 21 - Jun 26
For Your Every Summer RSVP, with Code: SUMMER15
Description
Vertical Adapter for 4700 and 5400 ModelsQuietCool Vertical Adapters allow you to install the QuietCool damper box on a vertical wall instead of the ceiling. This product is designed for homes that do not have an attic above the living space, but have attic space adjacent to the living area. The QuietCool Damper Box connects directly to the Vertical Adapter. Fits CL 4700, CL 5400, ES 4700 and ES 5400 Vertically mount your QuietCool damper box Collapsible design with easy assembly 14 in. x 30

Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 199 reviews
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Product Reviews
★★★★★ 5
Perfect fit, slid right into place and locked like it should
Size: AF943
Wanting to correct my previous review (I reviewed the incorrect item). This product fit perfectly in my vehicle- my apologies for the first review; perhaps Amazon or the vendor can replace the first review with this one. I am very pleased with this item.
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Reviewed in the United States on May 15, 2026
★★★★★ 5
Great filter
Size: AF741
Fit out Toyota Prius V 2014 perfect. Well made too.
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Reviewed in the United States on May 26, 2026
★★★★★ 5
Make sure you get the right part.
Perfect fit.
Helped my fuel efficiency on my long trip from California to Tennessee.
High quality materials that are easily maintained.
Easily replaceable on a 2024 Honda Accord Hybrid Sport (2.0L)
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 2, 2025
★★★★★ 5
Perfect fit Honda accord
Perfect fit. +2 mpg on a Honda hybrid. Excellent
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Reviewed in the United States on April 1, 2026
★★★★★ 5
Premium product!
Must have, save hundreds over time. Rinse and put back on. Get the cleaners and spray to keep it new.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 11, 2026
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