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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 Natural Crossbuck Unfinished Knotty Alder Wood Single Barn Door
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SKU 857791
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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.
Unfinished Knotty Alder Crossbuck Barn Door, 42 x 84 in
This Masonite Traditional barn door features a natural knotty alder wood slab with a classic crossbuck design. Solid core construction delivers authentic wood feel and durability, arriving unfinished and ready to stain for a custom look.
Key Features:
- Solid Core Authenticity: Dense construction provides durability and a premium, true-wood feel
- Unfinished, Ready to Stain: Natural knotty alder surface accepts stain for personalized finishes
- Classic Crossbuck Design: Rustic X-brace style adds farmhouse charm to pantries, closets, and laundry rooms
- Slab-Only Convenience: Door slab ships without track and hardware for flexible installation
- Trim Allowance Built In: Height trim up to 2 in (bottom only); width trim up to 1/2 in (1/4 in per side)
Specifications Table:
| Specification | Details |
|---|---|
| Series Name | Traditional |
| Color/Finish Family | Clear |
| Manufacturer Color/Finish | Natural |
| Door Finish | Unfinished |
| Actual Height (Inches) | 84 |
| Actual Width (Inches) | 42 |
| Common Size (W x H) | 42-in x 84-in |
| Door Thickness (Inches) | 1.375 |
| Configuration | Single |
| Core Type | Solid core |
| Door Surface | Smooth |
| Handing | Universal |
| Hardware Included | No |
| Material | Wood |
| Panel Type | Crossbuck |
| Soft Close | No |
| Wood Species | Knotty alder |
| Warranty | 1-year limited |
| CA Residents: Prop 65 Warning(s) | Yes |
| Finish or Rough Opening Height (Inches) | 80 |
| Finish or Rough Opening Width (Inches) | 38 |
| Door Style | Traditional; Rustic; Modern; Mid Century; Craftsman; Victorian; Contemporary |
| Trimming Allowance | Height: 2-in max (bottom rail only); Width: 1/2-in max (1/4-in per side) |
Frequently Asked Questions (FAQ):
Q: Is hardware included?
A: No. This is a slab-only barn door; track and hardware are sold separately.
Q: Can I trim the door to fit?
A: Yes. Up to 2 in can be trimmed from the bottom rail and up to 1/2 in total from the width (1/4 in per side). Trimming beyond these limits voids the warranty.
Q: What finish does the door have?
A: The door is unfinished natural knotty alder and is ready to stain.
Q: What openings will this 42-in wide door cover?
A: It typically covers a 36.5-in opening without casing; with casing, it covers approximately a 32.5–36.5-in opening as shown in the measuring guide.
Q: Does it have soft-close?
A: No. Soft-close is not included; it depends on the hardware kit you select.
Alder Warmth, Farmhouse Elegance
The natural knotty alder grain brings an inviting warmth that instantly elevates a room’s character. Its crossbuck silhouette draws the eye with sculptural simplicity—rustic yet refined. Pair it with matte black hardware and a pale, textured wall for a modern farmhouse moment. This door is a chic essential for creating layered, luxurious spaces with ease.
Customize your space with authentic knotty alder—add this barn door to your cart and finish it your way.