Lippert 8800 RV Window | Vertical Slider Radius | 18"×22" | Kit

Replace or add a vertical slider RV window with the Lippert 8800 Series RV Window — Vertical Slider, Radius Frame, 18" × 22". Complete replacement kit with tempered tinted glass, aluminum corrosion-resistant frame, integrated water weep system, and everything you need for installation. Proudly cut, tempered, and assembled in Indiana.

Vertical Slider Design

Vertical sliding operation — the window slides open vertically for ventilation without protruding outside the RV or requiring cabin swing clearance. Includes a fine mesh screen to keep insects out while allowing airflow.

Same Size in a Different Style?

The 18" × 22" opening is also available in other Lippert 8800 window styles:

• Lippert 8800 Horizontal Slider — 18" × 22" (radius frame)
• Lippert 8800 Vertical Slider — 18" × 22" (square corner frame)

Match your existing frame style and slider orientation to your installation for a seamless replacement.

Radius Frame Style

This is the radius (rounded corner) frame variant with a 3.125" corner radius for a precise, contemporary aesthetic used in most modern RV builds. If your existing installation uses square corners instead, see the square corner variants at the bottom of this listing.

Heavy-Duty Construction Built to Last

• Tempered glass — resists cracking, chipping, and shattering
• Tinted glass — blocks sunlight, reduces heat, and enhances privacy
• Aluminum frame — resists corrosion and extends window lifespan
• Latching mechanism and sealing gaskets keep your RV secure and dry
• Built-in water weep system directs water away from the window

Energy Efficiency Benefit

The tinted glass and quality seals help maintain comfortable interior temperatures — reduces reliance on heating and cooling, saving energy and costs over the life of the installation.

⚠️ Sizing — Rough Opening vs Actual Window

Important sizing clarification: the 18" × 22" dimension is the ROUGH OPENING size in your RV sidewall — NOT the actual outside dimensions of the window itself.

• Rough opening: 18" × 22"
• Actual window: approximately 3/8" smaller in both directions

Verify your existing rough opening (or planned cutout) measures 18" × 22" before ordering.

⚠️ Wall Thickness Requirement

With the included trim ring:

• Compatible with wall thicknesses of 0.75" or 1.5"

With your existing trim ring (if available for reuse):

• Compatible with wall thicknesses ranging from 0.5" to 3"

Measure your existing wall thickness at the window opening before ordering.

What's Included — Complete Kit

• (1) Lippert 8800 Series Vertical Slider window
• Black trim ring — clean, fast, simple installation aesthetic
• Mounting screws
• Foam seal
• Integrated mesh insect screen

Sold Separately: Window sealant (required for install).

Other Sizes in This Same Style

Looking for a different size in the same vertical slider, radius frame style?

• Lippert 8800 Vertical Slider Radius — 12" × 22"
• Lippert 8800 Vertical Slider Radius — 15" × 22"
• 18" × 22" (this listing)
• Lippert 8800 Vertical Slider Radius — 24" × 20"
• Lippert 8800 Vertical Slider Radius — 24" × 22"
• Lippert 8800 Vertical Slider Radius — 24" × 29"
• Lippert 8800 Vertical Slider Radius — 24" × 35"
• Lippert 8800 Vertical Slider Radius — 24" × 36"

Same Size in a Different Style?

The 18" × 22" opening is also available in other Lippert 8800 window styles:

• Lippert 8800 Horizontal Slider — 18" × 22" (radius frame)
• Lippert 8800 Vertical Slider — 18" × 22" (square corner frame)

Match your existing frame style and slider orientation to your installation for a seamless replacement.

Proudly Made in Indiana

Cut, tempered, and assembled in Indiana.

⚠️ Professional Installation Recommended

RV window installation involves working with the exterior wall, weather sealing (sealant sold separately), and trim integration. Installation should be performed by a qualified RV service technician unless you have prior experience with RV window installation.

1-Year Lippert Manufacturer Warranty

Genuine Lippert 8800 Series

Key Features

• Genuine Lippert 8800 Series RV window
• Vertical slider operation with fine mesh insect screen
• Radius (rounded corner) frame — 3.125" corner radius
• Tempered tinted glass — safety + heat/sunlight blocking + privacy
• Aluminum corrosion-resistant frame
• Built-in water weep system
• Latching mechanism + sealing gaskets
• Rough opening: 18" × 22" (actual window ~3/8" smaller both dimensions)
• Wall thickness compatibility: 0.75" or 1.5" (with included trim ring); 0.5"-3" (using existing trim ring)
• Complete kit includes: Window, black trim ring, mounting screws, foam seal, insect screen
• Sealant sold separately
• Made in Indiana
• Multiple sizes available in same vertical slider radius style
• Also available in horizontal slider (radius) and vertical slider (square corner) at this 18" × 22" size
• Backed by 1-year Lippert manufacturer warranty

Specifications

• Brand: Lippert
• Series: 8800
• Type: Vertical Slider RV Window
• Frame Style: Radius (rounded corner)
• Corner Radius: 3.125"
• Rough Opening: 18" × 22"
• Actual Window Dimensions: Approximately 3/8" smaller in both directions
• Glass: Tempered, tinted
• Frame Material: Aluminum (corrosion-resistant)
• Trim Ring: Black (included)
• Insect Screen: Fine mesh (included)
• Water Management: Built-in weep system
• Wall Thickness (Included Trim Ring): 0.75" or 1.5"
• Wall Thickness (Existing Trim Ring): 0.5" to 3"
• Includes: Window, trim ring, mounting screws, foam seal, insect screen
• NOT Included: Window sealant (sold separately)
• Country of Origin: Indiana, USA
• Same-Style Size Options (Vertical Slider Radius): 12×22, 15×22, 18×22, 24×20, 24×22, 24×29, 24×35, 24×36
• Same-Size Alternates: Horizontal Slider Radius 18×22, Vertical Slider Square Corner 18×22
• Warranty: 1-year Lippert manufacturer warranty