Copy of Custom AC Window Vent Kit for Casement Windows
Copy of Custom AC Window Vent Kit for Casement Windows
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Window inserts come with a quick detach hose adapter to make hose hookup a breeze. Just specify your hose type and size when ordering.
Shipping & Delivery
Shipping & Delivery
See top red banner for current lead times (shipping is FREE for most U.S. orders)
We ship to Canada! (Ground is usually free. Priority is $54)
Our Return Policy
Our Return Policy
Custom Window Inserts have a 50% refund policy.
All non custom items are eligible for a 100% refund. Fill out our form on our Contact page to start an order return.
Custom Products
Custom Products
Send an email to info@MartinsonManufacturing.com and let's have a conversation about what you need.
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Perfect Fit Guarantee
Didn't fit perfect? We'll make it right or give you a refund.
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Manufactured in the USA
Each part is made and test fitted by hand right here in the U.S.A.
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Meticulously Designed
Designed by an engineer for function and beauty.
Recent Customer Testimonials
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Janelle T.
I love how classy it makes it look. Better than a piece of wood that molds over time.
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Kevin M.
There is NO smell now, even with both lasers running, didn’t think I’d ever be able to say that.
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Cynthia F.
We received the inserts and wanted to let you know that everything from their construction to the packaging was absolutely flawless!
Made with Care
Martinson Manufacturing is a home-based family business in West Bend, Wisconsin whose mission is to create meticulous exhaust venting solutions to eliminate headaches and simplify people's lives.