21 Must-Know Facts About Standard RV Window Sizes

Keep your beloved home away from home in tip-top shape with our guide to RV window sizes. Learn about dimensions, materials, replacements, and more in this informative blog post!

Martin Cole // Expert in RV Living & Outdoor Adventure

Welcome aboard fellow RV enthusiasts! If you’re like us, living life on the open road is an unparalleled experience, and keeping your recreational vehicle in tip-top shape is essential.

One key component often overlooked in RV maintenance are the windows—vital for letting natural light into your home away from home and taking in those breathtaking views.

This blog post will dive into 21 must-know facts about standard RV window sizes, including common dimensions, materials used, and tips to ensure a perfect fit when replacing or upgrading your existing windows.

Key Takeaways

  • Standard RV window sizes range from 14×20 inches to 16×28 inches, with custom options available.
  • Accurate measurement is crucial when replacing or installing RV windows to ensure a proper fit and prevent leaks.
  • Different materials such as glass, acrylic, polycarbonate, vinyl, and aluminum are used for RV windows.
  • Upgrading your RV windows for better insulation can improve your on-the-road living experience by regulating temperature and reducing noise pollution.

Understanding Standard RV Window Sizes

RV windows come in various standard sizes, with common options ranging from 14 inches by 20 inches to 16 inches by 28 inches, and are typically made of materials such as aluminum, tempered glass, or acrylic.

Common Sizes For RV Windows

As an avid RVer, I’ve come to understand the importance of having the right size windows for my recreational vehicle. Keeping in mind the various types and models of RVs, here are some common sizes for RV windows that you might find helpful:

  1. 14 inches by 20 inches: A popular choice among small trailers and campers.
  2. 16 inches by 28 inches: Ideal for larger travel trailers or motorhomes with more living space.
  3. 18 inches by 32 inches: Commonly found in mid-sized fifth-wheel trailers or Class C motorhomes.
  4. 24 inches by 36 inches: Works well for Class A motorhomes with spacious interiors.
  5. Custom sizes: In addition to standard window sizes, many RV manufacturers offer custom window options to suit specific needs or preferences.

Bear in mind that these dimensions may vary depending on the make and model of your RV, as well as the type of window being installed (fixed, sliding, etc.) Always double-check your own measurements before ordering replacement windows to ensure a perfect fit and avoid any potential issues down the road.

Different Materials Used For RV Windows

As an RV owner, it’s essential to know the different materials used in making RV windows. Here are some of the common ones to consider:

  • Glass: This is the most common material used for RV windows, and it comes in different types such as tempered, tinted, or insulated. It’s durable and provides a clear view outside.
  • Acrylic: Also known as plexiglass, this material is lightweight and shatter-resistant. It’s an excellent alternative for glass, especially when traveling on rough terrains.
  • Polycarbonate: This is a type of plastic that’s highly resistant to impact, making it suitable for areas prone to hailstones or debris. It’s also lightweight and offers UV protection.
  • Vinyl: Vinyl windows are affordable and energy-efficient. They’re easy to maintain and come in various colors to match your RV’s exterior.
  • Aluminum: Aluminum windows are strong and lightweight, making them ideal for use in RVs. They’re also rust-resistant and can withstand extreme temperatures.

Knowing the different materials used for RV windows can help you make an informed decision when replacing or upgrading your current ones. Consider the pros and cons of each material before making a decision that suits your needs best.

Single-paned Vs Double-paned Windows

RV windows come in either single-paned or double-paned options. Single-paned RV windows are typically cheaper but provide less insulation and can have a higher risk of condensation buildup on the interior during cold weather.

Double-paned RV windows, on the other hand, offer better insulation by trapping air between two panes of glass and can help regulate temperature and noise levels inside the vehicle.

However, they may come at a higher cost than single-paned options.

21 Must-Know Facts About Standard RV Window Sizes

– There are a variety of standard sizes for RV windows, including 14×20 and 16×28 inches.

Variety Of Standard Sizes For RV Windows

As an avid RVer, I know that understanding the variety of standard sizes for RV windows is essential. Standard RV window sizes range from 14 inches by 20 inches to 16 inches by 28 inches, and beyond.

These size options can depend on the type of recreational vehicle you own and its specific measurements. It’s important to measure accurately when considering replacement or upgrading your existing RV windows as selecting the right size will ensure a proper fit and prevent leaks or gaps.

Without proper measurement, you could end up with ill-fitting windows that would compromise your vehicle’s aesthetics and functionality.

Importance Of Measuring Accurately For Replacement RV Windows

Accurate measurement is crucial when replacing or installing RV windows. Even a slight miscalculation can result in ill-fitting windows, leading to leaks and drafts that compromise the integrity of your vehicle’s insulation.

Before purchasing replacement windows, make sure to measure the depth of your window opening from the inside wall to the outer surface of the exterior siding carefully. Also, take note of the rough opening dimensions by measuring both sides (width and height) and record them down for reference.

Lastly, remember that different types of RVs have varying wall thickness; ensure precise measurements before ordering your new window panes.

Cost Of RV Window Replacement

As an RV owner, you must be aware of the cost of replacing a window when it gets damaged or broken. The price for purchasing and installing new RV windows can vary depending on several factors such as the size of the window, type of material used in its construction, and the complexity of installation.

However, there are certain ways to save money on RV window replacement costs. For instance, if you’re a DIY enthusiast with some technical prowess under your belt, then you may opt to replace the windows yourself instead of hiring professional help.

Involving professionals can increase expenses significantly due to labor costs.

Upgrading RV Windows For Better Insulation

As any seasoned RVer knows, the inside temperature of an RV can be greatly affected by outside weather conditions. Heat or cold air can easily penetrate through poorly insulated windows, making it uncomfortable and even unbearable inside the vehicle.

Upgrading your RV windows for better insulation is a smart way to improve your on-the-road living experience. Double-paned windows are popular among many RVers because they provide an extra layer of insulation that helps keep out extreme temperatures and noise pollution.

Other options include tinted windows that can deflect sunlight and reduce heat gain or loss, as well as window inserts that add another layer of protection against thermal exchanges.


In summary, understanding standard RV window sizes is essential for any outdoor enthusiast or travel lover seeking an enhanced on-the-road living experience.

From measuring accurately to selecting the right window size and type, there are many factors to consider when it comes to replacing or installing windows in a recreational vehicle.

Whether you’re a newbie or seasoned RVer, these 21 must-know facts about standard RV window sizes will help guide you in making informed decisions about your RV’s maintenance and upkeep needs.


1. What are the standard RV window sizes available on the market?

There is no one-size-fits-all answer to this as different brands and models vary in terms of window size, shape, and style. However, common sizes for RV windows include 14×21 inches or 18×20 inches.

2. How do I measure my current RV windows for replacement?

To measure your current RV window for replacement, you need to measure the width and height of the opening where it sits within the frame. Be sure to take accurate measurements and double-check before ordering a new window.

3. Can I customize my RV windows to fit my specific needs?

Yes, some manufacturers offer customization options depending on your preferences such as tinting color or glass thickness. Although custom orders may require additional lead time and higher costs compared to standard options.

4. What materials are available for RV windows?

RV windows can be made from various materials including glass, acrylic (also known as plexiglass), polycarbonate (a shatterproof thermoplastic) or tempered glass which makes them safer than regular glass varieties because they don’t break into sharp pieces when shattered due to their manufacturing process through heat treatment at high temperatures followed by quick cooling process called quenching).

About the author

Martin Cole, a passionate RVer and outdoor adventurer, leverages years of hands-on experience in full-time RV living to provide indispensable advice to the camping community. His comprehensive knowledge and personal insight make him an authoritative and trusted source for all things related to outdoor adventuring. Martin’s mission is to help others maximize their camping experiences, establishing his expert reputation in the RV and camping world.

Recommended reads