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Argon Gas Insulated

Screen Included

Tiltable Sash

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United Window & Door PRO Series 1800 31-3/4-in x 45-1/2-in White Exterior White Interior Vinyl Replacement Single Hung Window (Half Screen Included)

Name: United Window & Door PRO Series 1800 31-3/4-in x 45-1/2-in White Exterior White Interior Vinyl Replacement Single Hung Window (Half Screen Included)
Brand: United Window & Door
SKU: 5015819519
Rating: 4.9 (13 reviews)

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4.9

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Actual Size (W x H): 31-3/4-in x 45-1/2-in

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United windows deliver long-lasting durability, everyday convenience, and timeless value. Made from Brilliance™ solid vinyl that never peels, cracks, or warps, they’re built to stand up to the elements with virtually no maintenance. Designed for comfort, energy-efficient Low-E, Argon-filled glass helps keep your home comfortable year-round while reducing energy costs. Easy-to-clean tilt-in sashes and smooth, corrosion-resistant operation make everyday use effortless. With superior weather resistance, integrated security features, and a lifetime, non-prorated warranty, these USA-made windows deliver peace of mind, style, and value season after season. Exclusively at Lowe’s.

Best Value for the PRO Customer
High Quality Construction - DP/PG 50 Rated
Easy Installation - 3 1/4" Frame Depth
Low-E and Argon gas filled double pane glass keeps homes cooler in the summer and warmer in the winter
Fully welded frame and sashes; Bottom sash opens for ventilation and tilts in for easy cleaning
Half screen made of a dark fiberglass mesh, allows for ventilation and maximizes visibility while keeping insects out
Manufactured exclusively for Lowe's, proudly made in the USA and backed by a Lifetime, non-prorated warranty

Dimensions
Common Size (W x H)	32-in x 46-in	Clear Opening Size (W x H)	12-3/16-in x 40-3/8-in
Jamb Depth Measurement	3-1/4-in	Rough Opening Size (W x H)	32-in x 46-in
Clear Opening Sq. Ft.	3.42	Weight (lbs.)	40
Actual Size (W x H)	31-3/4-in x 45-1/2-in

Glass Features
Impact Resistant	No	High Altitude Rated	No
Glass Insulation	Low-E argon	Design Pressure (DP) Rating	50
Argon Gas Insulated	Yes	Solar Heat Gain Coefficient (SHGC)	.19
Glass Strength	Double strength	Glazing Type	Double pane
Obscure Glass	No	U Value	.25

General
Paintable	No	Interior Color/Finish	White
Series Name	PRO Series 1800	Project Type	Replacement
Color/Finish Family	White	Exterior Color/Finish	White
Lowe's Exclusive	Yes

Features
Grid Included	No	Hardware Color/Finish	White
Insect Screen Included	Yes	Screen Type	Fiberglass mesh
Frame Material	Vinyl	Screen Frame Type	Roll-form
Lock Type	Sweep	Wood Jamb Extension	None
Screen Included	Half	Balance System	Block and tackle
Tilting	Yes	Number of Locks	2
Frame Profile	Flat	Tilt Mechanism	Raised

Compatibility
For Use with Mobile Homes	No

Certifications
CA Residents: Prop 65 Warning(s)	No	Florida Product Approved	No
Meets CA Forced Entry Requirements	No	Texas Department of Insurance Approved	No
ENERGY STAR Certified South/Central Zone	Yes	Sound Transmission Control (STC) Rated	No
ENERGY STAR Certified Southern Zone	Yes	Hurricane Approved	No
ENERGY STAR Certified Northern Zone	No	Miami Dade Approved	No
ENERGY STAR Certified North/Central Zone	No

Miscellaneous
UNSPSC	30171600

Check out the Best Selling Single Hung Windows on Lowes.com

Review

4.9 out of 5

13 Reviews

3 Star

2 Star

1 Star

100% Recommend this product

Ratings may include incentivized customer reviews.

13 Customer Reviews

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Solid windows for the price.

Would Recommend

For the price, hard to beat. Straight, square, open smoothy, and a solid screen retention system. They're not Pella, but they're not Pella prices, either. For vinyl replacement windows, they're good.

JustaHomeownerSeptember 14, 2026
From PRO Series 1800 29-3_SLASH_4-in x 57-1_SLASH_2-in White Exterior White Interior Vinyl (Half Screen Included) Verified Purchaser

Was this Review Helpful ?

Would Recommend

I needed a replacement window, and after framing in to accommodate the purchased window, installation was quick and easy.

Paul SJuly 12, 2026
From PRO Series 1800 27-3_SLASH_4-in x 37-1_SLASH_2-in White Exterior White Interior Vinyl (Half Screen Included) Verified Purchaser

Was this Review Helpful ?

good replacement

Would Recommend

I bought these to replace some very old windows in our 70+ year ago garage. The fit was perfect and (with the help of some online videos) install was a breeze. Can't imagine how much money I saved doing this myself.

RodHApril 16, 2026
From PRO Series 1800 27-3_SLASH_4-in x 45-1_SLASH_2-in White Exterior White Interior Vinyl (Half Screen Included) Verified Purchaser

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Great Windows, easy to install !!

Would Recommend

Great windows and easy to install, only negative I have is the packaging tape holding the included trim pieces to the window for shipment leaves a residue that is ridiculously hard to remove.

S WallsJanuary 21, 2026
From PRO Series 1800 27-3_SLASH_4-in x 53-1_SLASH_2-in White Exterior White Interior Vinyl (Half Screen Included) Verified Purchaser

https://photos-us.bazaarvoice.com/photo/2/cGhvdG86bG93ZXM/c1e79d99-0762-5986-a6ef-1762bb507747

Was this Review Helpful ?

Great window for the value

Would Recommend

Easy to install and the price was prefect for my budget

MartyJune 28, 2026
From PRO Series 1800 27-3_SLASH_4-in x 45-1_SLASH_2-in White Exterior White Interior Vinyl (Half Screen Included) Verified PurchaserIncentivized

Was this Review Helpful ?

It’s cheaper then the name brands but just as good

Would Recommend

Very high quality window

LomieMarch 12, 2026
From PRO Series 1800 27-3_SLASH_4-in x 37-1_SLASH_2-in White Exterior White Interior Vinyl (Half Screen Included) Verified Purchaser

Was this Review Helpful ?

Good product

Would Recommend

LomieJune 10, 2026
From PRO Series 1800 23-3_SLASH_4-in x 37-1_SLASH_2-in White Exterior White Interior Vinyl (Half Screen Included) Verified Purchaser

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COMPARE PRODUCTS

		Name	Current Item United Window & DoorPRO Series 1800 31-3/4-in x 45-1/2-in White Exterior White Interior Vinyl Replacement Single Hung Window (Half Screen Included)
		Price	^$ 239 ^.00
		Ratings	13
		Frame Material	Vinyl
		Actual Size (W x H)	31-3/4-in x 45-1/2-in
RELIABILT105 Series 31-1/2-in x 51-1/2-in White Exterior White Interior Vinyl New Construction Single Hung Window (Half Screen Included)	RELIABILT150 Series 35-1/2-in x 59-1/2-in White Exterior White Interior Vinyl New Construction Single Hung Window with Grids, (Half Screen Included)	RELIABILT150 Series 35-1/2-in x 35-1/2-in White Exterior White Interior Vinyl New Construction Single Hung Window (Half Screen Included)	RELIABILTSeries 28100 31-1/2-in x 51-1/2-in White Exterior White Interior Vinyl New Construction Single Hung Window (Half Screen Included)	RELIABILT150 Series 31-1/2-in x 53-1/2-in White Exterior White Interior Vinyl New Construction Single Hung Window (Half Screen Included)	RELIABILT150 Series 35-1/2-in x 59-1/2-in White Exterior White Interior Vinyl New Construction Single Hung Window (Half Screen Included)	Pella150 Series 35-1/2-in x 59-1/2-in White Exterior White Interior Vinyl New Construction Single Hung Window (Half Screen Included)
^$ 197 ^.00	^$ 248 ^.00	^$ 208 ^.00	^$ 175 ^.17 $219.00	^$ 228 ^.00	^$ 228 ^.00	^$ 279 ^.00
165	166	142	78	71	142	29
Vinyl	Vinyl	Vinyl	Vinyl	Vinyl	Vinyl	Vinyl
31-1/2-in x 51-1/2-in	35-1/2-in x 59-1/2-in	35-1/2-in x 35-1/2-in	31-1/2-in x 51-1/2-in	31-1/2-in x 53-1/2-in	35-1/2-in x 59-1/2-in	35-1/2-in x 59-1/2-in