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Double-Hung Windows in Huntsville, AL

Our 2000, 4000 and 6000 series of double-hung windows give you the design you want with a variety of customizations and price points that suit your needs.

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When it comes to installing double-hung windows in your home, look no further than Window World of Huntsville. This classic option is our most popular window style. Their appeal:

  • Convenient operation enhances this attractive, traditional window style
  • Easy to clean with tilt-out upper and lower sashes
  • Versatile with many size and design options

Double-hung window colors to meet your specific taste.

Color Options

Color options may vary based on package, dimensions and more.

Click on our product brochures below for additional specifications:

View 4000 Series BrochureView 6000 Series Brochure

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Double-Hung Series

2000 Series Double-Hung

Express your unique personal style with custom-made 2000 series windows. The slimline design optimizes glass area for maximum view, while our fusion-welded sash construction provides years of trouble-free operation. They are a smart, gracious addition to your home, providing a lifetime of beauty, comfort and convenience.


  • Lower your energy bills with excellent all-weather insulation performance
  • Available in double-hung, sliding and picture window styles
  • Covered by our impressive limited lifetime warranty


  • Tilt-in sashes never need scraping or painting
  • Fully extruded lift rails for strength and durability
  • Fusion-welded sashes for added strength & rigidity
  • Sloped sill forces water to drain to the exterior
  • Double barrier-fin weather- stripping at sash sides
  • Protective hollow bulb seal at the sill for added weather protection

4000 Series Double-Hung

4000 series windows from Window World of Huntsville are beautiful as well as remarkably solid, sturdy and stable. Our beveled mainframe design is exceptionally slim and refined. Their sleek construction easily complements any type of architecture. The 4000 series is the ultimate choice for beauty, comfort and energy efficiency.


  • Vinyl frames will never chip, peel, crack or warp, and are maintenance free
  • Tilt-in sashes make cleaning a pleasure due to our effortless tilt latch
  • Backed by our strong limited lifetime warranty


  • Reinforced narrow silhouette frame and sash profiles provide expanded glass area
  • Composite meeting-rail reinforcement helps reduce the transfer of energy
  • End-of-throw cam shift locking delivers increased strength and protection to the recessed lock
  • True sloped sill quickly directs water runoff without the use of weep holes, keeping the exterior of the window clean and attractive
  • Telescoping sill dam offers protection from air and water infiltration and increased structural stability
  • Proprietary sill interlock prevents the sash to bow during powerful winds
  • Innovative screen bulb seal creates a snug fit that eliminates light and insect penetration between the screen and frame

Additional Features:

  • Sashes glide horizontally for easy opening and closing
  • Both sashes lift out for convenient cleaning
  • Nylon-encased dual brass roller system for smooth gliding performance
  • SolarZone™ insulated glass package available

6000 Series Double-Hung

The superior performance of 6000 series windows starts with innovation. Every precision-engineered component contributes to superior energy savings. This series is backed by Window World of Huntsville’s limited lifetime warranty for complete peace-of-mind.


  • Quad 4 weatherstripping at the header
  • Triple-barrier weatherstripping between sash and jamb
  • Compression bulb seal at the sill for further weather protection
  • Hidden screen track produces clean lines
  • Fully extruded lift rails for strength & durability
  • Fusion-welded sash & mainframe adds strength and rigidity

Technical Details

  • Vinyl frames and sashes will never chip, peel, crack or warp
  • Airtight insulating chambers help reduce conduction and cut high energy bills
  • Insulated glass unit with optimal air space improves year-round performance
  • PPG Interlock™ warm edge spacer system maximizes window performance and longevity
  • Interlock at sash meeting rails create a super-tight seal against air infiltration
  • Metal reinforcement adds strength at the meeting rails
  • Drop-in glazing provides energy efficiency as well as interior aesthetic appeal
  • Sloped sill ensures quick water to drainage to the exterior

Additional Features

  • Dual ventilator locks a secure way to keep windows open for proper ventilation
  • Full balance covers protect against air infiltration and add a finished look to the window frame
  • Constant force balance system provides easy fingertip operation
  • Tilt-in top and bottom sashes make cleaning safe and easy from inside the home
  • Full or half fiberglass screens provide ventilation while keeping insects out
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Low-E Glass

Low-E glass is brilliantly engineered to minimize the amount of UV rays and unwanted temperatures in your home in all climates.

Warm-Edge Spacer

Intercept’s™ Warm-Edge Spacer insulates the exterior edges of a sealed unit and can tack on 5% savings on monthly energy costs.

Vinyl Framing

Vinyl window frames are constructed with a complex array of compartments internally to help trap and repel unwanted weather.

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What is energy efficiency?

Energy-Efficient Windows

When it comes to your home, energy-efficient windows require less energy to heat your space than traditional products. That means savings on your monthly bills and comfort year-round.

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Your Questions, Answered

Double-Hung Windows FAQs

What are double-hung windows?

This classic window style allows for both the top and bottom panes of the window to move up and down, operating independently.

Are double-hung windows energy efficient?

Yes! Save on heating and cooling costs year-round with the SolarZone™ TG2 Elite™ insulated glass package. In warm weather, it will reduce solar heat accumulation, minimize interior glare and lower interior glass temperature. In cool temps, it delivers outstanding thermal performance and warmer interior glass surfaces to maintain comfort in the winter. This package also meets all ENERGY STAR requirements.

What are the size dimensions of double-hung windows?

Our double-hung windows are built to fit your home’s specific measurements. Contact us to learn size specifications of our different models.

Does this window style provide long-lasting durability?

Yes! When extreme wind and weather hit, our proprietary sill interlock stands strong. Traditional slope sill designs can allow the sash to bow during powerful winds, but with our interlocking sash-to-sill technology, the sash is channeled firmly into the window frame for a unified wall of strength.

How do you clean double hung windows?

Window World double hung windows are designed with tilt-in sashes. This means the window sashes can be tilted towards your home’s interior, making it easy to clean both sides of your windows.

To utilize your tilt-in sashes and clean your windows follow these steps:

  • Unlock and raise your window about 2”.
    Move the wash assist tabs so they’re between the sash and the frame.
  • Carefully pull the lower sash towards you and rest it on another object for support (be sure not to tilt it more than 90 degrees).
  • Next, you’ll want to lower the upper sash. To do this, slide the tilt latches to the top and lower the top window sash, leaving an inch or more of space between it and the lower sash.
  • Push the tilt latches inwards and tilt the upper sash inwards towards you, and rest it carefully on the lower sash.

Follow these instructions, and you’ll be able to properly clean and care for each and every crevice of your double hung windows.

What is the difference between single and double hung windows?

Single hung windows and double hung windows both have sashes that slide up and down vertically. Single hung windows have a mobile bottom sash and a static upper sash, while double hung windows feature two sashes that can be raised and lowered to the desired position.

How are double hung windows installed?

At Window World of Huntsville, our team of factory trained professionals is responsible for the installation of all our products. This includes setting, leveling and caulking to ensure your new windows have a perfect seal. Learn more about our window installation process.

How do you open double hung windows?

For double hung windows, both sashes can slide and allow the window to open. To open the lower sash, simply unlock the sash and slide it upwards. To open the upper sash, you’ll need to unlock your lower sash, and gently lower the upper sash to your desired position.

How do you lock double hung windows?

Before locking your double hung window, be sure to check the alignment of your locks. Ensure the top and bottom sashes are fully closed and sealed so your lock can be secured with no obstructions.

Are double hung windows energy efficient?

Yes, all Window World double hung windows are are ENERGY STAR® Certified. Each window is manufactured using Low-E glass, warm-edge spacers, and insulated vinyl framing, all designed to maximize your window’s energy efficiency. Learn more about the energy efficiency of Window World windows.

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What Your Neighbors Are Saying

Very pleased with the outcome of the install. The two people that came to install the windows were professional, very fast and efficient. They had the whole job done in just a few hours and they look great. Thanks!
Kevin C.
Window World did an excellent job replacing my old windows. They scheduled my installation on a day that was convenient for me. The crew that installed the windows were courteous, efficient, professional, and on time. The windows are great and such an improvement over the original windows in my house (built 1973).
Elizabeth K.
A wonderful experience. Sales rep and installer did a great job. Would recommend to anyone wanting windows, doors, siding, storm doors, and any work that they are capable of doing. They are great. David Bosley was our installer and I would highly recommend him.
Brenda C.

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