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MDF Radius Corners, L Corner (accepts 3/4" plywood), 4" Radius, 5 11/16"W x 1 7/8"D x 97"L Cabinetry Corners White River Hardwoods MDF
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MDF Radius Corners, L Corner (accepts 3/4" plywood), 4" Radius, 5 11/16"W x 1 7/8"D x 97"L

$102.00 - $102.00
$102.00
$122.00
$122.00 - $122.00
$122.00
SKU 4L34
Made in USA
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Technical Resources

CAD Files & Product Drawings

File Type Description Download
2D CAD File AutoCAD .dwg β€” profile cross-section for specification Download
Product Profile PDF spec sheet with dimensions & installation notes Download

CAD files are for specification purposes. Dimensions are nominal β€” verify with physical sample before final spec. Contact your White River rep for custom profile drawings.

Estimated lead time β€” 7–10 business days, subject to inventory availability

Returns are F.O.B. Buyer β€” subject to a 20% restocking fee.

View Full Returns & Exchanges Policy

Need Help? Call 1-800-558-0119 or email sales@whiteriver.com

Shipping Policy

Harmony Acoustic Panels $25 FedEx within the 48 contiguous United States.
Tambour Panels Shipping charges are 6% of the total sale.
Carvings Free FedEx within the 48 contiguous United States. Trade orders excluded.
Specialty Mouldings Freight calculated by destination. Minimum $45. LTL orders receive a separate emailed quote.
Composition & Plaster Shipping charges are 15% of the total sale. Custom & non-returnable.
Plaster Medallions Shipping charges are 15% of the total sale plus a $75 crate fee. Custom & non-returnable.
Urethane Products Minimum shipping charge of $25.
International Orders Minimum 30% of order total. Customs, duties, and tariffs are the responsibility of the recipient.
Full Shipping Details →

White River Hardwoods Β· MDF Radius Corners Β· Made in the USA

4β€³ L Corner

SKU 4L34 Β· Accepts 3/4β€³ Plywood Β· 4β€³ Radius Β· 97β€³ Length

Double Refined MDF Β· 5 11/16β€³W Γ— 1 7/8β€³D Β· Ships LTL


The 4β€³ L Corner for 3/4β€³ plywood β€” the most widely specified L Corner profile in the lineup. The two-leg L Corner geometry integrates cleanly with standard cabinet box construction. Double Refined MDF, made in Fayetteville, AR.

Made in Fayetteville, AR Β· The Only National MDF Radius Corner Manufacturer in the USA

The 4β€³ L Corner is the most widely specified radius corner for standard cabinet construction β€” the right radius, the right geometry, every time.

Product Details

Dimensions & Specifications

SKU Profile Radius Accepts Width Depth Length
4L34 L Corner 4β€³ Radius 3/4β€³ plywood 5 11/16β€³ 1 7/8β€³ 97β€³

* Material: Double Refined MDF. Lead time: 7–10 business days. Ships LTL β€” minimum $45 freight. Street address required for delivery.

Why MDF Radius Corners

The Problem This Solves

βŒ’

L Corner β€” 4β€³ Radius

The L Corner profile at 4β€³ radius is the workhorse of the radius corner lineup. The two-leg geometry integrates with both the front face and the side panel of the cabinet box β€” a cleaner, more complete corner solution than the Econo Quarter Round for full-height cabinetry and built-ins.

β–£

Double Refined MDF

Double Refined MDF machines cleanly, paints to a flawless finish, and holds its shape over time. No grain inconsistency, no void risk β€” just a consistent, dense substrate that takes primer and paint the way cabinetry demands. A surface indistinguishable from solid wood when properly primed and painted.

β˜…

Only National Manufacturer

White River Hardwoods is the only national manufacturer of MDF radius corners in the USA β€” made in Fayetteville, AR. Consistent quality, reliable availability, and a supplier that has been delivering to the cabinetry industry nationally for decades.

⊞

Accepts 3/4β€³ Plywood

Engineered specifically for 3/4β€³ plywood box construction β€” the standard substrate for this profile. The plywood box butts cleanly into the radius corner without shimming, scribing, or custom fitting. One piece, right the first time.

Technical Specifications

Key Facts

Profile

L Corner

Radius

4β€³

Accepts

3/4β€³ Plywood

Width

5 11/16β€³

Depth

1 7/8β€³

Length

97β€³

Material

Double Refined MDF

Lead Time

7–10 Business Days

Made In

Fayetteville, AR

Installation

Working With Radius Corners

1

Plan Your Layout

Determine the location and orientation of each radius corner. The piece is 97β€³ long β€” cut to your finished height. Mark cut lines accurately before cutting; MDF does not forgive mis-cuts at visible faces.

2

Cut to Height

Cut with a fine-tooth carbide blade β€” MDF dulls blades quickly. Cut from the finish face to minimize tear-out. Support the full length when cutting to prevent binding and chipping at the cut line.

3

Dry Fit First

The 3/4β€³ plywood box should seat cleanly into the radius channel. Dry fit before applying any fasteners or adhesive β€” confirm seating depth and check that the radius face is flush with adjacent cabinet faces.

4

Fasten & Secure

Secure with construction adhesive and finish nails or screws through the cabinet box. Pre-drill to avoid splitting. Set fasteners slightly below the surface β€” MDF fills cleanly and holds fasteners well when properly pre-drilled.

5

Fill & Prime

Fill all nail holes and seams with lightweight filler. Sand flush when dry. Apply a quality MDF primer before finish coats β€” MDF is highly absorbent and requires a sealing primer coat for a smooth, paint-ready surface.

6

Finish to Match

Apply your chosen paint in thin, even coats over the primed surface. Two finish coats over primer is standard for a smooth painted cabinet finish. Sand lightly between coats with 220-grit.

Always Prime MDF Before Finishing

MDF is highly absorbent at cut edges and faces. A quality MDF-specific or high-build primer is essential before any finish coat. A properly primed MDF radius corner paints to a finish indistinguishable from solid wood β€” skipping the primer step results in an uneven surface that requires significant additional work to correct.

Shipping β€” LTL Freight

MDF Radius Corners ship via LTL freight. Freight is calculated by destination with a minimum charge of $45. If actual freight exceeds $45, a separate freight invoice will be emailed after your order is placed.

Important: LTL delivery requires a physical street address. We are unable to deliver to APO/FPO addresses or PO Boxes. Estimated lead time is 7–10 business days from order confirmation, subject to inventory availability.

4L34 β€” 4β€³ L Corner, 3/4β€³ Plywood. The most widely specified radius corner profile we make.


Products cannot be returned without prior approval and must have a Return Goods Authorization (RGA) number. Under the following circumstances, products may not be returned for credit:

  1. Are marked on
  2. Are modified in any way
  3. Have been exposed to excessive sun or moisture
  4. Have sheetrock mud, primer, stain, "job site damage"
  5. Returned 60 days after invoice purchase date

Returns are F.O.B. Buyer and are subject to a 20% restocking charge. To receive credit for stock products, product must be received in re-sellable condition.Β Custom mouldings and custom woodcarvings are not returnable under any circumstances. If returned products are received damaged due to poor repackaging, no credit will be processed. It is imperative that items are not returned in their original packaging without a thorough inspection as more fill may be needed to boxes of carvings or additional wrapping for mouldings may be necessary to prevent return shipment damage. Please callΒ Β 1-800-558-0119Β and speak to our Customer Service Representative to request an RGA.

*Claims for packages marked "delivered" must be filed after 5 days and before 15 days from the date the package was marked "delivered."Β Claims for packages presumed to be lost (where the status is not "delivered") must be filed after 7 daysΒ (20 days for international) and within 30 days from the last checkpoint.

Shipping rates vary by product category β€” see the rate table on each product page. Residential LTL deliveries require capable help to unload. Inspect all shipments within 15 days and report damage immediately. Customer is responsible for all freight charges, including residential delivery fees and liftgate charges.

Full Shipping Policy β†’

Monday through Friday, 8:00 a.m. β€” 5:00 p.m. Central Standard Time

Phone:Β 800-558-0119

email:Β sales@whiteriver.com

1197 Happy Hollow Road
Fayetteville, Arkansas 72701 (map)
Toll Free: (800) 558-0119
Phone: (479) 442-6986
Fax: (479) 444-0406

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