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Deal.ai › Therma-Tru › External Door
Therma-Tru
Therma-Tru Entry 36-in 80-in x 4-9/16-in Fiberglass Full Lite Left-hand Outswing Unfinished Prehung Front Door Insulating Core in White

Therma-Tru Entry 36-in 80-in x 4-9/16-in Fiberglass Full Lite Left-hand Outswing Unfinished Prehung Front Door Insulating Core in White

Best price now

$998.00at Lowe'sObserved at 3:01 PM

Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.

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Our take on the Therma-Tru Entry 36-in 80-in x 4-9/16-in Fiberglass Full Lite Left-hand Outswing Unfinished Prehung Front Door Insulating Core in White

This is a Therma-Tru prehung front door with a 36 by 80 inch slab, a full-lite glass panel, and a 4-9/16 inch frame for a standard 2x4 wall. The fiberglass skin with an insulating core resists dents, rot and warping better than steel or wood, and the unfinished white surface is ready for paint. It is a left-hand outswing unit, so the hinges sit on the left and the door swings out. The best new price is $998 at Lowe's as of November 8, 2026, the only new price listed, so there is no recent range to compare against.

Best forFront entry on a standard 2x4 wallHomeowners who want a paintable, low-maintenance doorEntryways where an outswing door fits the layoutAdding light to a dark foyer with full-lite glass
Pros
  • Fiberglass skin resists dents, rot and moisture better than wood
  • Insulating core helps with energy efficiency and street noise
  • Full-lite glass brings in daylight
  • Prehung in a 4-9/16 inch frame for standard 2x4 walls
  • Unfinished white surface takes paint in any color
Cons
  • Left-hand outswing only, so it will not fit every opening
  • Unfinished, so it needs painting or staining before install
  • Full-lite glass means less privacy and more heat gain
  • Single new price of $998 gives no discount history to judge
  • Heavy prehung unit needs two people and a helper to set

Therma-Tru Entry 36-in 80-in x 4-9/16-in Fiberglass Full Lite Left-hand Outswing Unfinished Prehung Front Door Insulating Core in White prices at every store

  • Lowe'sNew

    In stock

    $998.00Free shippingObserved at 3:01 PM
    Visit Lowe's

Store links may earn us a commission. Price via Klarna.

Therma-Tru Entry 36-in 80-in x 4-9/16-in Fiberglass Full Lite Left-hand Outswing Unfinished Prehung Front Door Insulating Core in White price history

Lowest price we've seen: $998.00 on Nov 8 at Lowe's. Tracked across 1 store since Nov 8.

What reviewers say

Owners of Therma-Tru fiberglass entry doors generally report they hold up well against weather and stay free of dents and rot. Complaints tend to center on finish work and hardware rather than the door itself.

What people mention
  • BuildPraisedOwners say the fiberglass skin resists dents, rot and warping through wet and cold seasons.
  • InsulationPraisedThe insulating core is reported to keep drafts and street noise down compared with older wood doors.
  • FinishMixedThe unfinished surface takes paint well but needs careful prep and multiple coats to look even.
  • GlassMixedThe full-lite panel adds light, but owners note less privacy and more solar heat gain.
  • HardwareCriticisedSome owners replace the included hardware and weatherstripping soon after install.

Specifications

Hang
LSource
Width (")
36.0Source
Glass
YesSource
Color
WhiteSource
Height (")

Questions and answers

Is this door worth $998?
At $998 at Lowe's as of November 8, 2026, it is in line with other fiberglass full-lite prehung doors. You get a low-maintenance skin and insulating core, but budget for paint and possibly better hardware.
What does left-hand outswing mean?
Viewed from outside, the hinges are on the left and the door swings away from the house. Check your opening before ordering, since a right-hand or inswing door will not swap in.
What size wall does the 4-9/16 inch frame fit?
It fits a standard 2x4 wall with drywall or siding. For thicker walls you need a jamb extension.
Does it come painted?
No. The door is unfinished white, so it needs paint or stain before or right after installation to protect the fiberglass and frame.
Is the glass insulated?
The door has an insulating core, but the full-lite glass panel is a single lite on most builds. Check the unit's label for the glass rating if energy performance matters.
When is it cheapest?
Only one new price of $998 is listed, so there is no sale history to time. Watch for seasonal door promotions at Lowe's.
Where is the Therma-Tru Entry 36-in 80-in x 4-9/16-in Fiberglass Full Lite Left-hand Outswing Unfinished Prehung Front Door Insulating Core in White cheapest?
At Lowe's, for $998.00, as of our latest check.

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Stores we've priced the Therma-Tru Entry 36-in 80-in x 4-9/16-in Fiberglass Full Lite Left-hand Outswing Unfinished Prehung Front Door Insulating Core in White at

  • Lowe's deals and prices
80.0
Source
Style
ClassicSource
Door
LeftSource