RELIABILT 3900 Series 31-3/4-in x 73-1/2-in White Exterior White Interior Vinyl Replacement Double Pane Glass Low-E Argon Double Hung Window (Half Screen Included)
Item #140049 |
Model #3900DH3167340002
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The industry’s best performing replacement window Series in just about every aspect
Identified by a leading consumer magazine as a ‘top-rated vinyl replacement double hung’ window
With a standard lifetime accidental glass breakage warranty, Design Pressure (DP) rating of 60, and available R-4 thermal performance, the 3900 Series provides the best a vinyl window has to offer
Features the highest quality, maintenance-free vinyl, exclusive InsulKor™ fiberglass-enriched polyurethane reinforcements, all-welded frame and sash corners, and insulated glass for reduced condensation and better energy efficiency
Both sashes tilt in for easy cleaning, and both operate smoothly with an integrated, full-length, slim-line lift rail on each sash as well as a constant force coil balance system
Designed for both replacement and new construction applications, the window installs easily with included head expander, sill angle and 3 jamb adjusters, and an external accessory grove which accommodates a nail fin option
Features a 4-1/4-in frame thickness for an enhanced appearance and structural integrity
Window comes standard in white and includes an extruded half screen; additional sizes, factory mulling, glass, grid, screen, painted, laminated and vinyl colors, and warranty options are available; see local sales associate for available custom options
Features energy-efficient Low-E glass to help reflect the sun’s heat away from your home in the warm summer months and to keep the warmth inside your home during the colder winter months, as well as the added thermal efficiency of Argon insulating gas
General | |||
|---|---|---|---|
Color/Finish Family | White | Paintable | No |
Exterior Color/Finish | White | Glass Insulation | Low-E argon |
Hardware Color/Finish | White | Glazing Type | Double pane |
Interior Color/Finish | White | Number of Locks | 2 |
Series Name | 3900 Series | Glass Strength | Single strength |
Project Type | Replacement | Screen Type | Fiberglass mesh |
Frame Material | Vinyl | Tilt Mechanism | Flush |
Lock Type | Cam | Screen Frame Type | Extruded |
Dimensions | |||
|---|---|---|---|
Actual Size (W x H) | 31-3/4-in x 73-1/2-in | Rough Opening Size (W x H) | 32-in x 73-3/4-in |
Clear Opening Size (W x H) | 20-in x 20-in | Weight (lbs.) | 75 |
Common Size (W x H) | 32-in x 74-in | Clear Opening Sq. Ft. | 5.38 |
Jamb Depth Measurement | 3-1/4-in | ||
Features | |||
|---|---|---|---|
Argon Gas Insulated | Yes | Insect Screen Included | Yes |
Balance System | Constant force | Lowe's Exclusive | Yes |
Clear Opening Sq Ft | 5.38 | Obscure Glass | No |
Design Pressure (DP) Rating | 60 | Screen Included | Half |
Frame Profile | Beveled | Solar Heat Gain Coefficient (SHGC) | 0.2 |
Grid Included | No | Tilting | Yes |
High Altitude Rated | No | Ventilation Latches | Double |
Impact Resistant | No | Wood Jamb Extension | None |
Certifications | |||
|---|---|---|---|
CA Residents: Prop 65 Warning(s) | No | Meets CA Forced Entry Requirements | No |
ENERGY STAR Certified North/Central Zone | Yes | Meets Title 24 | No |
ENERGY STAR Certified Northern Zone | No | Meets Wildland Urban Interface | No |
ENERGY STAR Certified South/Central Zone | Yes | Miami Dade Approved | No |
ENERGY STAR Certified Southern Zone | Yes | Sound Transmission Control (STC) Rated | No |
Florida Product Approved | Yes | Texas Department of Insurance Approved | Yes |
Hurricane Approved | No | U Value | 0.29 |
Warranty | |||
|---|---|---|---|
Warranty | Limited lifetime | ||
Miscellaneous | |||
|---|---|---|---|
UNSPSC | 30171600 | ||
Check out the Best Selling Double Hung Windows on Lowes.com
Ratings may include incentivized customer reviews.
What Customers Are Saying
The windows have some quality issues, including mold and mildew forming under the beading within a year, and a problematic adjustment mechanism that requires removing the window from the opening. There are also reports of missing hardware and installation challenges. While the windows are decent in other aspects, the mold problem and adjustment difficulties have significantly impacted customer satisfaction, with the manufacturer unwilling to address the mold issue under warranty.
Customer review summary generated by AI, including incentivized reviews.Customer Sentiment
Happy Customer!
Shopping and dealing with Lowe's has been a very pleasant experience. I have noticed a huge improvement in both sound transmission (much lower now), and also a reduction in heat transmission as well! In short, the improvements are exactly what I was looking for. The installation was straight forward, as well. I'd do it again, without hesitation! Absolutely no regrets!
Horrible product
In 2 years, inside of windows started to fall apart, and mold formed. Lowes customer service refused to replace just the window sashes, and said I need to buy new window. DO NOT BUY!
The woodgrain appearance looks great
I wanted a window that was vinyl but looked like wood on the inside. This window looks great. I replaced the original 80 year old windows in a house and there is a 10 degree (F) difference in window temperature when the sun is shining bright. The window is easy to clean and would serve well as an egress window if needed.
From 3900 Series 31-3_SLASH_4-in x 53-1_SLASH_2-in White Exterior Light Oak Interior Vinyl Replacement Double Hung Window Low-E argon Double Pane Glass with Grids (Half Screen Included) Verified Purchaser
AVOID
I bought a whole home full of windows in 2020 with the Reliabilt 3900 windows. What an utter waste of money. All of the windows I bought from Lowe's all have this problem. They leak air terribly because the lower sash's upper corners all had 1/4" x 1/8" gaps. Please see the photo of a typical window. Some are worse and some are better. We had windstorm one night and the curtains were actually moving because of all of the air in leakage. Two windows also didn't have weather stripping on one s...
Hello, Gary. We apologize for any issues you may have encountered. Please contact our Customer Service Team directly at 1-800-746-6686 for assistance...

NO DOCUMENTATION
This is my first purchase of Reliabilt 3900 series window. Previously I have purchased Reliabilt 3201 series windows. The 3201s come with instructions, mounting screws and 4 mounting holes(2 top, 2 bottom). The 3900 which I just bought did not come with any screws or documentation. Also there are only mounting screw holes in the bottom half of the window.. The top half did not come with any mounting holes. Tried calling the local Lowes and get patched to the millwork and window department which ...
From 3900 Series 23-3_SLASH_4-in x 37-3_SLASH_4-in White Exterior White Interior Vinyl Replacement Double Hung Window Low-E argon Double Pane Glass (Half Screen Included) Verified Purchaser
Hello. We apologize for the issues with your window. If you would like further assistance, please contact our Customer Service Team directly at 800-6...

Quality Product
High quality material and craftsmanship. Sizes were just as listed, so a perfect fit.
Faulty/Fragile sash locks.
I had to replace all the sash locks on 4 windows. I picked up my windows from Lowes and brought them home. During unloading, I realized the sash locks on one of the windows were broken. When I called customer service requesting replacements, the customer service representative was only helpful in keeping me on the phone. She had no idea that the part could be ordered separately, put me on hold to verify if they would honor the discounted price, put me on hold for other reasons I do not remember....
Verified Purchaser
Great windows
Had these windows in my house a few months ago and they are amazing. I'm close to a high way and i do not hear the trucks brakes anymore. my neighbor just bought the same windows last week.
Great windows
Windows are very well made and super easy to work with. Definitely worth the price and slight wait for manufacturing.
From 3900 Series 35-3_SLASH_4-in x 53-1_SLASH_2-in White Exterior White Interior Vinyl Replacement Double Hung Window Low-E argon Triple Pane Glass with Grids (Half Screen Included) Verified PurchaserVerified Pro
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Hello Steve. We apologize for the issues with your window. Please contact our Customer Service Team directly at 800-672-5828 if you need further assi...