VWD Overlander Series Half-Slider Van Bunk Window – Universal Fit (OVR4015)

The OVR4015 is the large-format universal bunk window in the VWD Overlander Series. It is built for vans where you want a bigger view and stronger airflow in the sleeping or living area, while still keeping the practical half-slider design that builders trust.

This window is universal and can be installed on either the driver or passenger side. Fitment is based on measurements, not model year. That makes it a strong choice for Sprinter, Transit, ProMaster, Express, Savana, Econoline, and custom van builds where you want flexibility in placement and layout.

Universal Fit Advantage

• Installs on driver or passenger side
• Measurement-based universal fit
• Works across most van platforms
• Ideal for camper conversions and custom builds

Why Builders Choose A Larger Universal Bunk Window

The OVR4015 adds more light and more ventilation compared to smaller bunk windows. It is a favorite for rear sleeping areas because it gives airflow where you need it most without requiring a large full-size window cutout.

• More daylight in the cabin
• More airflow at the bed and living area
• Improves comfort while sleeping
• Supports roof fan intake or exhaust layouts

Half-Slider Ventilation

• Smooth adjustable sliding panel
• Integrated insect screen
• Controlled airflow without opening the entire window
• Drainage channels manage water

Glass & Comfort

• Solar Privacy Glass
• Privacy tint for daytime discretion
• Helps reduce glare and heat
• Balanced visibility and privacy for camper vans

Clamp Ring Installation

Clamp-ring mounting sandwiches the sheet metal between the exterior frame and interior clamp ring. This creates a secure, serviceable installation without permanent urethane bonding.

• 3M foam seal included
• No welding required
• Serviceable installation method

Measurements

• Outer Dimensions: 41-5/16" x 16-5/16"
• Cut-Out Dimensions: 40" x 15"
• Vent Opening Size: 17-13/16" x 11-7/8"
• Clamp Ring Wall Depth: 1/8"

Best Installation Locations

• Rear sleeping area
• Side wall next to bed platform
• Flares and bunk extensions (verify clearance)
• Custom builds needing a larger bunk opening

Frequently Asked Questions

Which side does this window fit?

It installs on either the driver or passenger side.

Is this a vehicle-specific window?

No. It is a universal window installed using measurements.

Does a larger bunk window help airflow?

Yes. More opening area improves air exchange in sleeping and living zones.

Does it include a screen?

Yes. A built-in bug screen is included with the slider assembly.

Is this a permanent bonded install?

No. It uses a clamp ring mounting system which remains serviceable.