Fiberglass Entry Door Systems

Fiber-Classic Oak

Meet the very first fiberglass front door — the door that revolutionized an industry. Therma-Tru's Fiber-Classic® Oak door changed how doors are made, and still sets the standard for today's fiberglass entry doors.

Our original vision was an entry door that would not crack, split, splinter, or warp like wood. The result? Therma-Tru's Fiber-Classic Oak fiberglass entry door that's durable, stylish, economical and most preferred by builders and remodelers.

Pick Door Height: 6'8" Doors 8'0" Doors

3'6" doors not available as doublePick a Configuration: 6 Available Styles

Pick a Door Style:

  • 2 Lite 4 Panel
  • 3/4 Captured Oval Lite 1 Panel
  • 3/4 Captured Oval Lite 2 Panel
  • 3/4 Deluxe Oval Lite 2 Panel
  • 3/4 Lite 1 Panel
  • 3/4 Lite 2 Panel
  • Camber Top Lite 4 Panel
  • Center Arch Lite 7 Panel
  • Center Lite 2 Panel 3/4 Top
  • Fan Lite 4 Panel
  • Full Lite Flush
  • Full Lite Flush-Glazed
  • Full Lite W/ Stile Lines
  • Half Lite 2 Panel
  • Half Lite 2 Panel Flush-Glazed
  • Half Lite Flush
  • Twin Half Lite 2 Panel
  • 2 Panel 3/4 Top
  • 3 Panel Scroll
  • 3 Panel Square Top
  • 4 Panel Square Top
  • 6 Panel
  • 8 Panel
  • Flush Panel

Pick a Glass Style:

  • Blackstone
  • Crystalline
  • Sedona
  • Salinas
  • Element
  • Maple Park
    Maple ParkMaple Park
  • Avonlea
  • Saratoga
  • Arden
  • Texas Star
    Texas StarTexas Star
  • Wellesley
  • Concorde
  • Kensington
  • Crystal Diamonds
    Crystal DiamondsCrystal Diamonds
  • Axis
  • Bevelline
  • Frosted Images
    Frosted ImagesFrosted Images
  • Chord
  • Chinchilla
  • Rainglass
  • Granite
  • Internal Blinds
    Internal BlindsInternal Blinds
  • Colonial Grille
    Colonial GrilleColonial Grille
  • Craftsman Grille
    Craftsman GrilleCraftsman Grille
  • Prairie Grille
    Prairie GrillePrairie Grille
  • Clear
  • No Glass
    No Glass

Add Left Sidelite:

  • 3/4 Lite Sidelite 1 Panel
  • 3/4 Scroll Lite Sidelite 1 Panel
  • Full Lite Sidelite Flush
  • Full Lite Sidelite Flush-Glazed
  • Full Lite Sidelite W/ Stile Lines
  • Half Lite Sidelite 1 Panel
  • Half Lite Sidelite 1 Panel Flush-Glazed

Add Right Sidelite:

  • 3/4 Lite Sidelite 1 Panel
  • 3/4 Scroll Lite Sidelite 1 Panel
  • Full Lite Sidelite Flush
  • Full Lite Sidelite Flush-Glazed
  • Full Lite Sidelite W/ Stile Lines
  • Half Lite Sidelite 1 Panel
  • Half Lite Sidelite 1 Panel Flush-Glazed

About Transoms (?) Add Transom:

  • Elliptical
  • Half Round
  • Rectangular
  • Single

View Details   Where to Buy   Try it on

View style number(s), features and additional information.

Available Door Sizes:
    Dimensional Data

    Available Options:
    Impact Rated (?)
    Noise Rated (?)
    Flush Glazed (?)

    Low-E Available (?)

    Finish Options:
    Stainable Paintable

    Installation Instructions
    Grille Options

    Energy Star Qualified

    ENERGY STAR qualified doors save energy, save you money, increase the comfort of your home, and protect your valuable possessions from sun damage. They are also better for the environment because lowering your energy use means less air pollution from power plants. And, Therma-Tru fiberglass doors offer thermal efficiency that is three to seven times greater than traditional wood doors, according to testing performed in our Advanced Technology Center in Edgerton, Ohio.

    Available Finish Options

    Our Same Day Stain Kit is available in a full range of the most popular colors, so you can easily match your home's exterior and interior design. You can control the tone of the finish simply by using more or less of the stain. Check with your dealer to find out if your door comes finished. Stain kits can be ordered by clicking here.

    *Colors shown here may vary from actual application due to uncontrollable factors such as the lighting in your room and monitor settings.


    Light Oak


    English Walnut

    Natural Oak




    We suggest painting Therma-Tru Doors with high-quality acrylic latex house paint.

    For Sherwin Williams store locations call 1-800-4SHERWIN

    Suggested Sherwin Williams Superpaint™ codes

    Bronze White Stone Almond
    A89T54 A89W07 A89W53 A89W51
    N1 10/32 R2 1/128 B1 9/32 B1 4/32 +1/64
    R2 13/32 B1 1/64 W1 10/32 Y3 19/32
    W1 39/32 N1 1/64 N1 2Y +46/32 N1 2Y +18/32
    B1 6Y +62/32      

    *Sherwin Williams colors numbers are for 1 gallon mixes.

    Clavos & Strap Hinge

    Add rustic styling with our clavos and strap hinge decorative hardware in an authentic hand-hewn black finished look, including round and pyramid clavos available in three sizes and 18" long strap hinges.

    Dentil Shelves

    Add an optional 4- or 16-block dentil shelf for a more historically correct door. Both dentil shelves have detailed graining and durable fiberglass.

    Grille Options

    We offer a variety of traditional or contemporary decorative grilles. Grilles options include fixed grilles, removable wood grilles and grilles sealed between the glass.

    Our fixed grilles come with multiple grille lite options.

    Our removable wood grilles give an elegant accent to full light doors. And the grilles are easily removed, making it a snap to stain or paint them.

    Our doors with grilles sealed between the glass (GBG), have the energy efficiency of our double-paned clear glass doorlites, with the added beauty of doors with grilles.

    Grille Styles:

    2 Lite

    3 Lite

    4 Lite

    6 Lite

    10 Lite

    15 Lite

    For additional grill options, please contact a Therma-Tru representative at 800-537-8827.

    More Information

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