Easy Window UV Protection

Indow Museum Grade inserts are UV protection for windows to prevent wood floors, furniture, and artwork from fading, saving you the cost of replacing damaged items. These UV blocking windows block 98% of the damaging UV radiation coming through your windows, while providing the comfort and energy savings of Standard Grade.

UV radiation, more than other kinds of heat and light, is the biggest cause of fading of furniture and wood floors. Unless you have newer double-pane windows with UV reflecting, your windows are not stopping UV rays from entering your home. UV radiation is harmful to your furniture, art, and floors, but also can be harmful to your health. Museum Grade inserts press into the interior of your existing window frames for solar window protection that doesn’t alter your windows. This means you get the performance of new double-pane windows, but keep your home’s original windows.

man on ladder installing Museum Grade insert, helping old windows perform like UV blocking windows

Museum Grade:

  • Nominal 1/8“ thick acrylic glazing that’s visually identical to Standard Grade.
  • Edged in Indow’s patented silicone compression tubing.
  • Made in three different colors - warm white, brown and black.
  • Available in custom shapes like arches and rounds.
  • Virtually invisible when installed.

Museum Grade solar window inserts blend into the surrounding window frame, preserving the look of your original windows while also providing uv blocking so furniture, artwork, books, and wood floors don’t get damaged. Blinds and shades perform similarly when it comes to UV blocking, but they will be worn down over time from the UV rays.

Craftsman, Scott Sidler: Indow Museum Grade inserts provide your old windows with UV protection

“To use Indow Museum Grade, where you can extend the life of the floors another 10-15 years between re-finishings, financially, it makes a lot of sense.”

– Scott Sidler, The Craftsman Blog

If you’re trying to block UV light in a commercial setting, please visit our commercial page.

How Indow’s Solar Window Inserts Perform:

  • As much as 6% of all sunlight is damaging UV rays. Museum Grade filters out 98% of damaging UV radiation.
  • Independent testing shows virtually no reduction in UV filtering over a 15-year period.

Testimonials on UV Blocking Window Inserts

Partners Cord and Alonso, who live in the famed Case Study House #26 in California, purchased Museum Grade inserts to protect their art collection from intense sunlight and UV damage. Because they care about their home’s interior preservation, window inserts were the answer.

“I am amazed at how well they fit in and how easy it was to install them,” Cord said.

Man installing insert in floor to ceiling windows next to hardwood floor for UV protection

Every insert is custom made using our laser measuring system to ensure a precise fit in your window frames. To protect your home and possessions from damaging UV rays, get a free estimate for Museum Grade solar window inserts today.

Custom Geometry Production Sold Out for 2022

Due to high demand and inventory shortages, we have sold out of production spots for our special geometry windows for 2022. If you would like to get pricing information or be added to our waitlist, please contact us. Otherwise, we will update this page when production slots become available.

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bedroom with window with indow inserts installed for soundproofing in san francisco



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Grade Types

Each grade blocks drafts and reduces outside noise, but our premium grades have special features to make your existing windows work just right. Click here to read about all the different grades.

A drawing of a window that is having a window insert installed.
What Do They Cost?
Indow Performance Grades start at $40 MSRP per sq ft. That's $480 MSRP for a 3'x4' window opening.*

Consider the cost and distruption of replacing your windows. The national average for a vinyl window is $66-$87 per sq ft and wooden incased windows average $71-$109 per sq ft.

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*Sales tax may apply.

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