Keystone Montana windshield & glass replacement
A Keystone Montana uses framed RV windows — many dual-pane on later and higher trims — costing about $275–$1,000 per window installed. Because Montana is one of the highest-volume fifth wheels ever built, replacement units and glass-only inserts are comparatively easy to source.
Keystone Montana glass at a glance
- RV class
- Fifth wheel
- Chassis
- Towable — no cab glass
- Model years
- 1999–present
- Glass type
- Dual-pane and single-pane framed RV windows
- Typical cost
- $275–$1,000 per window installed
- Glass lead time
- 5–20 business days
The Montana's production volume is its owners' biggest advantage. Frame sizes repeat across model years and across Keystone's other lines, so a shop can usually match a unit quickly.
The failure pattern is predictable: rock strikes on the road-facing side, and dual-pane fogging on units that have seen a decade of heat cycling.
What to know before you order Keystone Montana glass
- Find the frame stamp inside the window flange to identify the manufacturer — Kinro and Lippert are the usual suppliers — then order by that number and the rough opening.
- Glass-only replacement into a sound existing frame is often possible and is much cheaper than a complete window assembly.
- Emergency-egress windows on a Montana must be replaced with rated egress units; a non-rated substitute is a safety and code failure.
- Butyl tape and screw torque are what keep a reinstalled Montana window dry. Rushed reinstalls, not bad glass, cause most post-replacement leaks.
How to get an accurate Keystone Montana quote
- Have the VIN ready — on a fifth wheel the glass follows the Towable, and model year decides the part.
- Say whether the damage is a chip, a running crack, a stress crack with no impact point, or dual-pane fogging — each is a different job.
- Ask whether the quote is OEM or aftermarket glass, and whether freight is included.
- Confirm the safe drive-away time so you know when the coach can move.
- Get the workmanship warranty on leaks and stress cracks in writing before work starts.
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Keystone Montana Glass Questions
How much is a Keystone Montana window replacement?
About $275–$1,000 per window installed. Single-pane sliders sit at the bottom; large dual-pane living-area units at the top.
Can I get just the glass instead of the whole window?
Frequently yes, if the frame and seals are sound. Glass-only replacement can cut the cost roughly in half.
Why is my Montana window foggy inside?
The dual-pane thermal seal has failed and moisture has entered the gap. It cannot be cleaned; the sealed unit must be rebuilt or replaced.