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Make room for the right door.
Your opening, frame and swing all matter. Gather the measurements, then confirm the exact model before you order.
Masonite
Masonite Traditional 42-in x 84-in 4-Panel Primed MDF Single Barn Door
$682.26 USD
Price for the selected option. Shipping and taxes calculated at checkout.
SKU 857775
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What to measure before ordering
- 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.
- 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.
- 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.
Ask the Super Arbor teamProduct 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.
42x84 4-panel primed MDF barn door slab
A clean, 4-panel barn door slab from Masonite, primed and ready to paint. Solid-core MDF construction delivers a smooth, modern look with enhanced sound reduction and durability for interior spaces.
Key Features:
- Versatile 4-Panel Design: Timeless style that complements contemporary, farmhouse, and traditional interiors
- Primed & Paint-Ready: Arrives primed for quick finishing to match your décor
- Solid-Core Construction: Heavier MDF core helps reduce sound and adds durability
- Slab Only: Use with your preferred barn door track and hardware (sold separately)
- Trim Allowance: Height up to 2 in (bottom rail only); width up to 1/2 in total
Specifications Table:
| Specification | Details |
|---|---|
| Common Size (W x H) | 42-in x 84-in |
| Actual Width (Inches) | 42 |
| Actual Height (Inches) | 84 |
| Door Thickness (Inches) | 1.375 |
| Material | Wood (MDF) |
| Core Type | Solid core |
| Panel Type | 4-panel |
| Door Surface | Smooth |
| Color/Finish Family | White |
| Manufacturer Color/Finish | Primed |
| Door Finish | Unfinished, primed |
| Configuration | Single |
| Handing | Universal |
| Hardware Included | No |
| Bypass | Yes |
| Soft Close | No |
| Glass Tint | None |
| Assembly Required | No |
| Warranty | 1-year limited |
| CA Residents: Prop 65 Warning(s) | Yes |
| Finish or Rough Opening Width (Inches) | 38 |
| Finish or Rough Opening Height (Inches) | 80 |
| Weight (lbs.) | 74 |
| UNSPSC | 30171500 |
| Trim Allowance | Height: up to 2 in (bottom rail only); Width: up to 1/2 in total (1/4 in per side) |
Frequently Asked Questions (FAQ):
Q: Does this door include the barn door hardware?
A: No. This listing is for the slab only; track and hardware are sold separately.
Q: Can the door be trimmed?
A: Yes, up to 2 inches from the bottom rail and up to 1/2 inch in width total (1/4 inch per side). Trimming beyond these limits voids the warranty.
Q: Is the door prefinished?
A: No. It is primed white and ready to paint.
Q: What is the core and surface type?
A: Solid-core MDF with a smooth surface.
Q: What sizes of openings does the 42-in door cover?
A: Typically covers 32.5–36.5-in openings; confirm with your track setup and measurement guide.
Crisp, modern lines meet classic barn-door charm
This Masonite slab brings a quiet sophistication with its four balanced panels and smooth primed surface. The solid-core build lends weight and presence, turning a simple passage into a design moment. Paint it in a saturated hue and pair with sleek hardware to create a stunning room divider or office entry. It’s an effortless path to everyday luxury and tailored style.
Elevate your space with this solid-core, paint-ready barn door—add your hardware and finish to create a custom look today.