Interior secondary windows placed behind existing windows to cut noise and improve insulation.
Interior Secondary Windows are second windows installed behind an existing window that open and close like the primary unit. Each combines laminated glass with a PVB interlayer, an isolating air space, and spring-loaded seals.
The manufacturer states noise reductions of 75 to 95 percent with tested STC values up to 53. The windows add insulation and stop drafts without replacing the primary window in residential, business, hotel, and recording-studio settings.
Adds products that compete with one of Interior Secondary Windows’ direct competitors but not with Interior Secondary Windows itself. They are shaded, and Linked Through names the direct competitor each one competes with.
| Attribute | Interior Secondary Windows | Winserts | Climate Seal Thermal Series Window Inserts | Indow Window Inserts | |
|---|---|---|---|---|---|
| Linked Through | — | Direct competitor | Winserts | Winserts | |
| Provider | |  |  |  | |
| Founded | 1998 | 1981 | — | 2010 | |
| Sells To | — | Consumers, Enterprise | — | Consumers | |
| Pricing Model | — | Transactional | — | Transactional | |
| Ownership | — | Venture-backed | — | Private |
Provider
Founded 1998
Sells To —
Pricing Model —
Ownership —
Provider
Founded 1981
Sells To Consumers, Enterprise
Pricing Model Transactional
Ownership Venture-backed
Linked Through Winserts
Provider
Founded —
Sells To —
Pricing Model —
Ownership —
Linked Through Winserts
Provider
Founded 2010
Sells To Consumers
Pricing Model Transactional
Ownership Private
Magnetic interior storm window inserts that insulate existing windows against cold, heat, and noise.
Acrylic window inserts that press into existing frames to block drafts, noise, and energy loss.
Magnetic interior storm window inserts that insulate existing windows against cold, heat, and noise.
Acrylic window inserts that press into existing frames to block drafts, noise, and energy loss.