Indow offers six distinct grades for our custom storm windows, all of which block drafts and reduce outside noise. Don’t buy new windows. Make the ones you have just right through our precision Laser Measuring Process.


Standard Grade

Our workhorse interior storm window insert blocks drafts and reduces outside noise.

acoustic Grade

Twice as thick as Standard Grade, Acoustic Grade provides superior window soundproofing.

Museum Grade

UV protection for your furniture and artwork with the same clarity as our Standard Grade.


Privacy Grade

Obscure what’s happening within to maintain privacy while enjoying plenty of light.

Sleep Panels

Blocks all light for better sleep and helps those with light sensitivity and migraines.

Commercial Grade

Our scratch-resistant window inserts are perfect for commercial settings or busy homes.

Shade Grade

Shade Grade’s pleasing soft green tint lets in light while blocking out excess heat.