Indows® Window Inserts

Comfort, Efficiency and your Peace of Mind

Indow window inserts are an award-winning solution designed to improve comfort, energy efficiency, and noise control in any space—whether it's a historic home or modern construction. Made in the USA, these easy-to-install inserts fit seamlessly and come standard with powerful benefits.

Modern Comfort for Timeless Windows

Why Choose Indow Inserts?

Energy Efficiency

Save on your utility bill by reducing heat transfer by up to 50%.

Noise Reduction

Block up to 70% of outside noise—perfect for bedrooms, nurseries, and busy neighborhoods.

UV Protection

Block up to 98% of harmful UV rays to preserve flooring, furniture, and artwork.

Custom Fit

Designed to fit your windows perfectly, without damaging historic frames or trim.

Insert Options for Every Need

Standard Insert

  • Up to 50% noise reduction

  • Improved energy efficiency

Perfect for: everyday use in living spaces and older homes

Acoustic Grade

  • Industry-leading STC 42–45

  • Up to 70% noise reduction

Perfect for: bedrooms, nurseries, home offices

UV Blocking Insert

  • Blocks 98% of UV rays

  • Maintains natural light with clear, tint-free finish

Perfect for: rooms with artwork, wood floors, and sun exposure

Privacy Insert

  • Lets light in, keeps visibility out

  • Maintains daytime brightness

Perfect for: showers, bedrooms, street-facing windows

Blackout Insert

  • 100% light blocking

  • 50% noise reduction

Perfect for: shift workers, light sleepers, and media rooms

Blackout Acoustic Insert

  • 100% light blocking

  • 70% noise reduction

Perfect for: media rooms, dark rooms, or total escape spaces

Commercial Grade

  • Durable and low-maintenance

  • Available in both Standard and Acoustic

Perfect for: hotels, B&Bs, office spaces

custom window inserts

Customize Your Insert

Every insert features a durable edging tube that helps it blend into your existing window frame—available in white, brown, or black to match your interior.

Our acrylic interior storm windows are lightweight, virtually invisible, and custom-built for a tight fit. Don’t replace your windows—upgrade them. With our precision measuring software and guided support, you’ll get the perfect insert for your space.

Just pick your grade, measure with confidence, and we’ll take it from there.