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Masonite

Masonite Traditional 42-in x 84-in Natural Unfinished Knotty Alder Wood Single Barn Door

$1,264.57 USD

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SKU 857749

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What to measure before ordering
  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. 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. 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.

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.

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Product details

Catalog information may describe more than one option. Confirm the specifications for your selected SKU; the store's current shipping, returns and order terms apply.

Unfinished Knotty Alder 5-Lite Frosted Glass Barn Door, 42x84 in

Bring natural warmth and modern lines to your interior with this Masonite single barn door. Crafted from knotty alder with a solid-core construction, it arrives unfinished and ready to stain, featuring five frosted-glass lites that invite light while preserving privacy. Ideal as a space-saving solution for closets, pantries, offices, and baths.


Key Features:

  • Natural Alder Construction: Solid-core knotty alder wood delivers durability and authentic grain that stains beautifully.
  • Privacy With Light: Five frosted glass lites (satin white) diffuse light with a high privacy rating while brightening rooms.
  • Unfinished Flexibility: Arrives unfinished and ready to stain to match your décor.
  • Space-Saving Barn Style: Sliding slab design maximizes floor space; track and hardware sold separately.
  • Trim Allowance Included: Up to 2 in height (bottom rail only) and 1/2 in width total (1/4 in per side).

Specifications Table:

Specification Details
Common Size (W x H) 42-in x 84-in
Actual Width (Inches) 42.0
Actual Height (Inches) 84.0
Door Thickness (Inches) 1.375
Material Wood
Wood Species Knotty alder
Core Type Solid core
Door Finish Unfinished
Manufacturer Color/Finish Natural
Color/Finish Family Brown
Configuration Single
Bypass Yes
Hardware Included No
Glass Style Frosted glass
Glass Tint Satin white
Glass Shape Full lite (5-lite design)
Door Surface Smooth
Handing Universal
Soft Close No
Assembly Required No
Trimming Allowance Height: up to 2 in (bottom rail only); Width: up to 1/2 in total (1/4 in per side)
Finish/Rough Opening Width (Inches) 38.0
Finish/Rough Opening Height (Inches) 80.0
Warranty 1-year limited
CA Residents: Prop 65 Warning(s) Yes
UNSPSC 30171500

Frequently Asked Questions (FAQ):

Q: Does this door include the sliding hardware?
A: No. This is the slab only; barn door track and hardware are sold separately.


Q: Can I cut or trim the door?
A: Yes, within limits: up to 2 in from the bottom rail for height and up to 1/2 in total from the sides (1/4 in per side). Trimming beyond this voids the warranty.


Q: Is the glass transparent?
A: The glass is frosted (satin white), providing a high level of privacy while allowing light to pass through.


Q: What are the exact dimensions and thickness?
A: Actual size is 42 in W x 84 in H with a 1-3/8 in thickness.


Q: Is the finish ready to use?
A: The door is natural unfinished wood and is ready to stain; finishing is recommended before installation.


Modern Farmhouse Glow in Natural Alder

This barn door softly filters light through its frosted five-lite design, wrapping the room in a serene, luminous veil. The knotty alder frame brings organic charm and texture, a tactile counterpoint to the glass’s sleek hush. Pair it with matte black hardware and layered neutrals for a tailored, effortless statement. It’s a refined essential that turns everyday passageways into a moment of luxury.


Elevate your space with natural alder warmth and diffused-glass privacy—add this Masonite barn door to your cart today.

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