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Doors

Fiberglass Prehung Back Door with XL Pet Door, Clear Half Lite

36 × 80 inRight-hand, inswingFiberglass with polystyrene core

$1,376.10 each

Doors
Project notes (optional)

Saved with this line in your cart and sent with your order, so the desk can check the fit.

1 door
$1,376.10
Freight delivery
$149.00 per order
Sales tax
Added at checkout

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Freight delivery$149.00

Per order, added in your cart. We deliver to the 48 contiguous states.

Availability confirmed by the desk at approval, with your delivery date. Shipping policy · Returns

Doors

Details & specifications.

From the maker · the maker’s description

Durable fiberglass prehung exterior back door featuring a clear half-lite window and an extra-large built-in pet door. White primed and ready to paint, with right-hand inswing and weatherstripping for a tight seal—ideal for homes needing pet access without sacrificing security or efficiency.

Sunlit Entry, Effortless Pet Freedom

This half-lite door invites a generous wash of daylight while its clean primed finish becomes a canvas for your palette. I love the integrated extra‑large pet portal—sleek and functional—so your furry companions move with independence. Paint it a crisp white or a moody charcoal and pair with matte black hardware for tailored contrast. It’s a chic, hard-working essential that elevates everyday living with smart ease.

Give your home bright style and your pet easy access—add this prehung fiberglass back door to your cart today.

SKU
FWTH_36SLP_4IRH
Size
36 × 80 in
Handing
Right-hand, inswing
Prehung or slab
Prehung
Material
Fiberglass with polystyrene core
Glass
Clear Glass
Door Type
Exterior Prehung
Finish
White Primed
Color Family
White
Door Style
Traditional
Door Configuration
Single Door
Glass Layout
1/2 Lite
Glass Shape
Square Lite
Door Glass Insulation
Low-E tempered
Bore Type
Double Bore
Features
Pet Door, Weatherstripping, Tamper-Proof Hinges, Lockset Bore (Double Bore)
Hinge Finish
Nickel
Hinge Type
Standard
Number of Hinges
3
Included
No additional items included (lockset not included)
Jamb Size
4-9/16 in.
Product Weight
95 lb
Door Thickness
1.75 in.
Actual Unit Size
37-1/2 in. W x 81-1/2 in. H x 4-9/16 in. D
Rough Opening
38 in. W x 82 in. H
Suggested Applications
Back, Basement Entry, Front, Side
Energy Star Qualified
Not Qualified
Manufacturer Warranty
5 Year Limited Warranty
Pet Door Size
15 in. x 20 in. (XL); fits pets up to 120 lb
Frame Material
Composite
Glass Caming
No caming
Full product name
Steves & Sons 36 in. x 80 in. Reliant Series Clear Half Lite RHIS White Primed Fiberglass Prehung Back Door with XL Pet Door

Key features

  • Built-In XL Pet Access: 15 x 20 in. pet door with removable locking flap accommodates pets up to 120 lb.
  • Durable Fiberglass Construction: Dent-resistant slab with polystyrene core for energy efficiency and security.
  • Weather-Sealed Frame: High-performance weatherstripping and fin sweep help block drafts and moisture.
  • Ready to Install: Prehung in a 4-9/16 in. primed frame with double-bored lockset prep and three nickel hinges.
  • Clear Low-E Half Lite: Tempered 1/2-lite glass brightens entry while maintaining performance.

Specifications are provided by the manufacturer. Brand names are trademarks of their owners.

Guide

What to measure before ordering

These notes are a planning aid. Product names, photos and shared descriptions do not confirm fit. Check the selected SKU, manufacturer specifications and installer measurements before ordering.

  1. 1

    Identify what you are replacing.

    A slab is the door panel. A prehung unit includes a frame. Record whether you need a slab or a complete unit, and check exactly what the selected product includes.

  2. 2

    Measure the opening and the frame.

    Record the width and height in several places, plus the wall or jamb depth. Keep rough-opening measurements separate from the existing door's dimensions. Include the units with every measurement.

  3. 3

    Confirm the swing and the exact model.

    Note which side the hinges sit on, the side you are viewing from, and whether the door swings toward or away from you. Confirm handing terminology and required clearances against the manufacturer's documentation for the selected SKU.

Before you ask

Questions about this product.

Rather talk it through? 1.877.490.7099

  • Rough opening required is 38 in. wide by 82 in. high.