Keystone RV Window Replacement

Headquarters: Goshen, Indiana
RV types built: Travel trailers and fifth wheels

Keystone builds towables exclusively, so glass work here means side windows, sliders, emergency exits, and entry door glass rather than windshields. Windows are supplier parts identified by dimension and mounting, not by trailer model.

Keystone RV model lines we cover

Montana, Montana High Country (fifth wheels)
Cougar, Alpine, Raptor, Fuzion (fifth wheels and toy haulers)
Passport, Springdale, Bullet, Hideout, Outback (travel trailers)

What to know about Keystone RV glass

Keystone uses clamp-ring mounted windows on most towables — you need the rough opening size and the exact sidewall thickness to order correctly.
Montana and Alpine higher trims commonly use dual-pane insulated windows; seal failure causing fogging is the most frequent complaint and is often resealable.
Emergency exit windows must be replaced with egress-rated units, not standard windows of the same size.
Frameless bonded windows appear on newer premium trims and require a different removal and sealing process than clamp-ring units.

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Keystone RV Glass Questions

How much does a Keystone RV window cost to replace?

Roughly $150–$550 for standard fixed and sliding windows, and $400–$900 for dual-pane insulated windows. Emergency exit windows run $300–$700 because of their egress hardware.

How do I measure a Keystone RV window for replacement?

Measure the rough opening in the sidewall, not the glass, then measure the sidewall thickness where the clamp ring seats, and note whether the corners are radiused or square. Those three values identify the correct replacement.

Why are my Montana windows fogging up between the panes?

The perimeter seal on the dual-pane unit has failed and moisture is trapped inside. It will not clear on its own. A glass shop can separate, clean, and reseal the sash for $150–$300, or you can fit a new insulated sash for $400–$900.