Name: Therma-Tru Smooth Star 36-in x 80-in x 4-9/16-in Fiberglass Left-hand outswing Ready to paint Unfinished Prehung Insulating core Front Door
Brand: Therma-Tru
SKU: 3192843
Rating: 4.2 (644 reviews)

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Engineered to last longer, Therma-Tru fiberglass doors resist dents, rust and rot
Smooth-Star fiberglass doors feature crisp, clean contours, making them more attractive and durable to steel.
Traditional 9-Lite door features deep embossed panels to complement a variety of homes
Door features a smooth surface that is primed and ready to paint, offering endless possibilities to create the look you want
Wood door frame provides a sturdy surface for door mounting
Non-removeable pins provide extra security on outswing doors
Durable low-maintenance fiberglass is built for long-term performance; backed by a lifetime limited warranty for peace of mind
Pre-hung and ready to install for your convenience with options for right- and left-handed entries

General
Handle Finish	N/A (no handle)	Panel Type	2-panel
Painted	No	Primed	Yes
Prehung Door	Yes	Color/Finish Family	White
Slab Door	No	Configuration	Single door
Left-hand Inswing	No	Core Type	Insulating core
Left-hand Outswing	Yes	Glass Insulation	Dual-pane
Right-hand Inswing	No	Handing	Left-hand outswing
Right-hand Outswing	No	Lockset Bore	Ready for lockset and deadbolt
Universal/Reversible Handing	No	Sill Finish	Mill
Finish	Unfinished	Sill Type	Fixed
Glass Style	Simulated divided light	Manufacturer Color/Finish	Ready to paint
Material	Fiberglass	Interior Color/Finish	Ready to paint
Fire Rated	No	Hinge Location (Exterior View)	Right side

Dimensions
Common Width (Inches)	36	Actual Width (Inches)	37.5
Common Height (Inches)	80	Rough Opening Height (Inches)	81
Common Depth (Inches)	4.5625	Rough Opening Width (Inches)	38.25
Common Size (W x H)	36-in x 80-in	Actual Height (Inches)	80.5
Actual Width with Sidelights (Inches)	0	Jamb Width (Inches)	4.5625
Jamb Width Measurement	4-9/16-in	Actual Depth (Inches)	4.5625
Weight (lbs.)	100

Features
Weatherstripping Included	Yes	Locking System Included	No
Privacy Rating	0	Door Style Traditional	Yes
Brickmould Included	No	Door Style Coastal	No
Handle(s) Included	No	Door Style Farmhouse	No
Impact Resistant Glass	No	Back Door	Yes
3-Point Locking System	No	Stained	No
Door Style Victorian	No	Unfinished	Yes
Door Style Modern	No	Commercial/Residential	Residential
Door Style Craftsman	No	Impact Resistance	No
Door Style Rustic	No	Side Door	Yes
Door Style Mid Century	No	Lowe's Exclusive	Yes
Door Style Contemporary	No	Glass Caming	No
Glass Shape	Half lite	Solar Heat Gain Coefficient (SHGC)	0.19

Certifications
CA Residents: Prop 65 Warning(s)	Prop 65 WARNING(S) -	ENERGY STAR Certified Northern Zone	Yes
ENERGY STAR Certified South/Central Zone	Yes	ENERGY STAR Certified North/Central Zone	Yes
ENERGY STAR Certified Southern Zone	Yes	U Value	0.28

Warranty
Warranty	Limited lifetime

Compatibility
For Use with Mobile Homes	No

Miscellaneous
Sub-Brand	Smooth Star	UNSPSC	30171500

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Review

4.2 out of 5

644 Reviews

81% Recommend this product

Ratings may include incentivized customer reviews.

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+ 59

What Customers Are Saying

This fiberglass door is generally well-received for its quality, appearance, and energy efficiency. Customers report the door is durable and resists warping and rot. However, some experienced issues with the construction, including misaligned frames and incorrectly installed hinges. The overall consensus is that this is a decent, budget-friendly option, but buyers should inspect the door carefully upon delivery and be prepared to do additional work to ensure a proper fit.

Customer review summary generated by AI, including incentivized reviews.

644 Customer Reviews

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Horrible quality

Would Not Recommend

Serious quality issues - The top hinge was mortised not deep enough so the top of the vertical edge of the door hits the jamb and cannot close properly. Worse yet, the mortises for the door locks are off by half an inch. Discovered this only after contractor installed the door and started to put on the locks. Now I am in a bind. Return it and pay for another installation fee? Therma-Tru doors have really gone down...

NotThrilledSeptember 28, 2026
From Smooth Star Entry Door 36-in x 80-in x 4-9_SLASH_16-in Fiberglass Right-hand inswing Ready to paint Unfinished Prehung Residential Insulating core Front Door Verified Pro

https://photos-us.bazaarvoice.com/photo/2/cGhvdG86bG93ZXM/bcfd6edd-223b-5e97-a80e-5cf9c487feac

https://photos-us.bazaarvoice.com/photo/2/cGhvdG86bG93ZXM/346ea527-bd06-5e36-9ecd-38fb69055240

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Response from Therma-Tru Doors

Thank you for reaching out to share your feedback with us. Our Consumer Service team would like to learn more about your experience. If you would lik... Read More

Therma-Tru DoorsOctober 2, 2026

ThermaTru

Nice Fiberglass Door

Would Recommend

Nice Fiberglass Door. I haven't hung it yet, but it looks good and should be no problem. I like fiberglass, they don't rust or warp.

GrayBeardSeptember 27, 2026
From Smooth Star Entry Door 32-in x 80-in x 4-9_SLASH_16-in Fiberglass Left-hand inswing Ready to paint Unfinished Prehung Residential Insulating core Front Door Verified Purchaser

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Great door

Great door at a great price.

bigCSeptember 26, 2026
From Smooth Star Entry Door 36-in x 80-in x 4-9_SLASH_16-in Fiberglass Left-hand inswing Ready to paint Unfinished Prehung Residential Insulating core Front Door Verified Purchaser

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Not what they used to be

Would Not Recommend

Install this door this weekend. The door itself is a decent finish for fiberglass door. The issue with this door is the hinge placement. Hinges were mortised too high, and it makes the door nearly impossible to open or close. I installed and pulled this door three separate times and I could not get this door to adjust properly without re-mortising the hinges on the door. The overall fit and finish of the jamb leaves a lot to be desired.

ScottSeptember 20, 2026
From Smooth Star Entry Door 36-in x 80-in x 4-9_SLASH_16-in Fiberglass Left-hand inswing Ready to paint Unfinished Prehung Residential Insulating core Front Door

Was this Review Helpful ?

Response from Therma-Tru Doors

Thank you for reaching out to share your feedback with us. Our Consumer Service team would like to learn more about your experience. If you would lik... Read More

Therma-Tru DoorsSeptember 21, 2026

ThermaTru

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		Name	Current Item Therma-TruSmooth Star 36-in x 80-in x 4-9/16-in Fiberglass Left-hand outswing Ready to paint Unfinished Prehung Insulating core Front Door
		Ratings	644
		Material	Fiberglass
		Configuration	Single door
		Impact Resistance
JELD-WEN32-in x 80-in x 4-9/16-in Steel Right-hand outswing Primed Prehung Residential Insulating core Front Door Blinds Included	Therma-TruSmooth Star Entry Door 36-in x 80-in x 4-9/16-in Fiberglass Right-hand inswing Ready to paint Unfinished Prehung Insulating core Front Door	Therma-TruSmooth Star Entry Door 36-in x 80-in x 4-9/16-in Fiberglass Left-hand inswing Ready to paint Unfinished Prehung Insulating core Front Door	Therma-TruSmooth Star Entry Door 36-in x 80-in x 4-9/16-in Fiberglass Right-hand inswing Ready to paint Unfinished Prehung Insulating core Front Door	Therma-TruSmooth Star Shaker Entry Door 36-in x 80-in x 4-9/16-in Fiberglass Left-hand inswing Ready to Paint Unfinished Prehung Residential Insulating core Front Door	Therma-TruSmooth Star Shaker Entry Door 36-in x 80-in x 4-9/16-in Fiberglass Left-hand outswing Ready to paint Unfinished Prehung Residential Insulating core Front Door	Therma-TruSmooth Star Shaker Entry Door 36-in x 80-in x 4-9/16-in Fiberglass Right-hand outswing Ready to Paint Unfinished Prehung Residential Insulating core Front Door	Therma-TruSmooth Star Shaker Entry Door 36-in x 80-in x 4-9/16-in Fiberglass Right-hand inswing Ready to Paint Unfinished Prehung Residential Insulating core Front Door	Therma-TruSmooth Star Entry Door 32-in x 80-in x 4-9/16-in Fiberglass Right-hand inswing Ready to paint Unfinished Prehung Insulating core Front Door
10	980	980	980	972	972	972	973	980
Steel	Fiberglass	Fiberglass	Fiberglass	Fiberglass	Fiberglass	Fiberglass	Fiberglass	Fiberglass
Single door	Single door	Single door	Single door	Single door	Single door	Single door	Single door	Single door