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National Door Company ZZ364628R Fiberglass Door vs Therma-Tru Fiber-Classic Doors

The Therma-Tru Fiber-Classic is the stronger door for most shoppers. It carries an ENERGY STAR rating, impact resistance up to 175 mph (DP-55), and a choice of frame profiles and grille colors. The National Door Company door is a plain primed fiberglass slab with clear Low-E glass and a flush design, so it suits a simple, modern entry where you want an unobstructed view. Owners of fiberglass doors in this class report good resistance to dents and rot, and both brands are widely sold through door dealers and lumberyards.

  • Choose the National Door Company if you want a clean flush slab with clear glass and a right-hand outswing, and you plan to paint it yourself.
  • Choose the Therma-Tru Fiber-Classic if you want an ENERGY STAR door with impact ratings, frame options and grille colors to match your house.

Prices

  • National Door Company ZZ364628R Fiberglass Door: $679.00 at eBay (last seen Nov 9)
  • Therma-Tru Fiber-Classic Doors: $400.00 at eBay (last seen Nov 9)
  • Difference: the Therma-Tru Fiber-Classic Doors is $279.00 cheaper than the National Door Company ZZ364628R Fiberglass Door at the latest prices (Nov 9)
National Door Company
National Door Company ZZ364628R Fiberglass Smooth, Primed – 36″x80″ Full Lite, Clear Glass

National Door Company ZZ364628R Fiberglass Door

National Door Company ZZ364628R Fiberglass Smooth, Primed – 36″x80″ Full Lite, Clear Glass

$679.00at eBayChecked Nov 9
See all prices and details
Visit eBay

Store links may earn us a commission.

Pros
  • Simple flush slab suits modern entries
  • Clear Low-E glass lets in light and cuts heat gain
  • Primed surface takes paint easily
  • Standard 36 by 80 inch size fits common openings
Cons
  • No impact or ENERGY STAR rating listed
  • Right-hand outswing only
  • No frame or grille options
  • Clear glass offers no privacy
Therma-Tru
Fiber-Classic Doors

Therma-Tru Fiber-Classic Doors

Fiber-Classic Doors

$400.00at eBayChecked Nov 9
See all prices and details
Visit eBay

Store links may earn us a commission.

Pros
  • ENERGY STAR rated for efficiency
  • Impact rated to 175 mph at DP-55
  • Internal blinds give privacy control
  • Frame profiles and grille colors to match the house
Cons
  • Blinds add moving parts to maintain
  • Dealer ordering needed for handing and options
  • Traditional styling may not suit modern homes
  • Impact and efficiency depend on correct installation

What separates them

National Door Company ZZ364628R Fiberglass DoorTherma-Tru Fiber-Classic Doors
GlassClear full-lite glass with Low-E coatingClear lite with internal blinds
Energy ratingLow-E glass only, no certification listedENERGY STAR rated
Impact resistanceNot ratedUp to 175 mph, DP-55
Frame and grille optionsFlush design, no frame or grille choicesScroll or Flat Lite frame, SDL bars in white, almond or bronze
FinishPrimed, ready to paintFactory finish options
HandingRight hand, outswing onlyConfigurable through dealer ordering
DesignFlush slab, modern lookTraditional lite frame styling

Price history

$1,004.56$897.78
Nov 1Nov 10
  • National Door Company ZZ364628R Fiberglass Door: lowest $970.54 on Nov 10 at Amazon.
  • Therma-Tru Fiber-Classic Doors: lowest $897.78 on Nov 8 at Lowe's; $897.78 on Nov 10.

Prices at every store

National Door Company ZZ364628R Fiberglass Door

  • eBayNew

    In stockSold by topgear1998 (100% positive, 931 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $679.00Free shippingChecked Nov 9
    Visit eBay
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $970.54Free shippingChecked 4 h ago
    Visit Amazon
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $1,004.56Checked Nov 1
    Visit Amazon

Store links may earn us a commission.

All 2 stores and price history →

Therma-Tru Fiber-Classic Doors

  • eBayNew

    In stockSold by motek1961 (100% positive, 1,200 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $400.00+ $40.00 shippingChecked Nov 9
    Visit eBay
  • Lowe'sNew

    In stock

    $897.78Free shippingChecked 4 h ago
    Visit Lowe's
  • Lowe'sNew

    Availability unknown

    $5,895.23+ $79.00 shippingChecked 4 h ago
    Visit Lowe's

Store links may earn us a commission. Some prices via Klarna.

All 2 stores and price history →

Specs compared

SpecNational Door Company ZZ364628R Fiberglass DoorTherma-Tru Fiber-Classic Doors
Installation LocationExterior—
MaterialFiberglass—
Door TypeFront Entry—
Door HandingRight Hand/Outswing—
Height80"—
Width36"—
Size80" H x 36" W x 1.75" D—
Thickness1.75"—
Door ConfigurationExterior—
Glass MaterialGlass—
Energy EfficiencyLowe Glass—
Glass EffectClear—
Show all 20 specsShow fewer specs
SpecNational Door Company ZZ364628R Fiberglass DoorTherma-Tru Fiber-Classic Doors
Design EffectFlush—
Typical UsersADULT—
Glass name—Clear Lite with Blinds
Impact rating—up to 175 mph (DP-55)
Energy rating—ENERGY STAR
Frame profiles—Scroll Lite Frame, Flat Lite Frame
SDL bar width—1 1/8" wide
Grille colors—White, Almond, or Bronze

Questions and answers

Which is better for a windy, storm-prone area?
The Therma-Tru. It is impact rated up to 175 mph at DP-55, while the National Door Company door lists no impact rating.
Which door is more energy efficient?
The Therma-Tru is ENERGY STAR rated. The National Door Company door has Low-E glass but no efficiency certification listed.
Can I get privacy glass on either?
The Therma-Tru offers clear lite with internal blinds, which you can close for privacy. The National Door Company door is clear glass only.
Which lasts longer?
Both are fiberglass, which resists rot and dents. The Therma-Tru's factory finish and rated construction give it an edge in harsh weather.
Is the Therma-Tru worth stepping up to?
Yes for most exterior entries. You get impact and energy ratings plus frame and grille choices the National Door Company door does not offer.
Which suits a modern house?
The National Door Company flush slab. The Therma-Tru's lite frames and SDL bars read as traditional.

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More comparisons

  • National Door Company ZZ364628R Fiberglass Smooth, Primed – 36″x80″ Full Lite, Clear Glass vs KHSHOW Fiberglass Exterior Front Door – 36x80In, Right-Hand Inswing, 4-Lite Frosted Glass
  • Therma-Tru Benchmark vs National Door Company ZZ364628R Fiberglass Smooth, Primed – 36″x80″ Full Lite, Clear Glass
  • Therma-Tru Benchmark vs Fiber-Classic Doors

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