SKU: 4506399758

MDF Radius Corners, J Corner (accepts 3/4" plywood), 3" Radius, 4 1/4"W x 1-11/16"D x 97"L

$87.30 $97.00
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Description

MDF Radius Corners, J Corner (accepts 3/4" plywood), 3" Radius, 4 1/4"W x 1-11/16"D x 97"LWhite River Hardwoods MDF Radius Corners Made in the USA 3 J Corner SKU 3J34 Accepts 3 4 Plywood 3 Radius 97 Length Double Refined MDF 4 1 4W 1 11 16D Ships LTL The J Corner profile at 3 radius for 3 4 plywood. The J Corner geometry wraps both the front face and the return of the corner delivering a more enclosed radius transition than the Econo Quarter Round for applications where the cabinet side panel is visible. Made in Fayetteville, AR The Only

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

3″ J Corner

SKU 3J34 · Accepts 3/4″ Plywood · 3″ Radius · 97″ Length

Double Refined MDF · 4 1/4″W × 1 11/16″D · Ships LTL


The J Corner profile at 3″ radius for 3/4″ plywood. The J Corner geometry wraps both the front face and the return of the corner — delivering a more enclosed radius transition than the Econo Quarter Round for applications where the cabinet side panel is visible.

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

The J Corner wraps the radius and the return — a more complete corner solution for cabinetry where both faces of the corner are finished and visible.

Product Details

Dimensions & Specifications

SKU Profile Radius Accepts Width Depth Length
3J34 J Corner 3″ Radius 3/4″ plywood 4 1/4″ 1 11/16″ 97″

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

Why MDF Radius Corners

The Problem This Solves

⌒

J Corner — 3″ Radius

The J Corner profile encloses both the radius face and the side return of the corner in a single piece. Where the Econo Quarter Round covers the radius only, the J Corner profiles the full corner transition — the right choice when the cabinet side panel is a finished, visible surface.

▣

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 — 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.

★

Only National Manufacturer

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

⊞

Accepts 3/4″ Plywood

Engineered specifically for 3/4″ plywood box construction — 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

J Corner

Radius

3″

Accepts

3/4″ Plywood

Width

4 1/4″

Depth

1 11/16″

Length

97″

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 97″ long — 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 — 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 3/4″ plywood box should seat cleanly into the radius channel. Dry fit before applying any fasteners or adhesive — 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 — 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 — 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 — skipping the primer step results in an uneven surface that requires significant additional work to correct.

Shipping — 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.

3J34 — 3″ J Corner Radius, 3/4″ Plywood. Made in the USA.


Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 4506399758

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4.5 ★★★★★
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S
Sun Valley
Chelsea, US
★★★★★ 4
35% cotton shirt, 25% linen suit
Color: White, Size: 6, Color: White, Size: 6
This formal suit is not as white as I thought it was going to be. It’s off white due to it having 25% linen, which gives it a natural, “more expensive” sort of look. My 5yo said “it’s a little itchy but looks nice”. I think it’s just stiff because it’s new. I’m going to wash the button shirt and see how it is after washing. I do wish it was 100% cotton. The button shirt is made of a cotton blend with 35% cotton. The stitching is very clean. Well made. As you can tell, it’s a little loose on my average size 5yo. I got him size 6. This will be a great suit for one of the kids piano recitals.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 18, 2025
D
Verified Purchase
daniela galvis
Whiting, US
★★★★★ 5
Traje joven
Size: 14, Color: Beige
Compré este traje tipo esmoquin para la confirmación de mi hijo de 13 años y quedé encantada. La calidad de la tela es súper buena, se ve elegante y tiene un acabado muy bonito. Además, orma excelente y le quedó perfecto. Se veía muy elegante para una ocasión tan especial. Definitivamente lo recomiend
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
M
Verified Purchase
Mitesha Nottage
Carnegie, US
★★★★★ 5
Great suit
Size: 12, Color: Mint Green, Size: 12, Color: Mint Green
Very nice suit. Love the material. My 11 year old is tall and slim- 5’3”, 80 lbs. I got a size 12 for the length. The jacket fit perfectly, the pants was good length and has elastic in the waist to adjust for size. Overall, it’s a good suit and I’d recommend it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
J
Verified Purchase
Jade
San Leandro, US
★★★★★ 1
Horrible
Size: 5, Color: Sky Blue
Ordered this for my son’s graduation! They send an entirely different set! It wasn’t even a suit!! It was a shirt and pants which were dark as ever and not light blue! Please do not order this! Quality was cheap for the price as well!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 5, 2026
T
Thunderboltmysql
Lowell, US
★★★★★ 4
Nice Suit - Light Gray Color OF Suit IS Not A Solid Light Gray, It Has Linear Designs
Size: 12, Color: Light Grey, Size: 12, Color: Light Grey
I had purchased this polyester and linen blend suit for my son, in size 12Y for him in the color light gray. The color of the suit depicted in the advertisement arrived to be a bit different upon arrival. It's not a solid color light gray, it actually has small black liner lines dispersed all over the suit. The coat features a single button in the center, and there are two side pockets fairly decent sized. Unfortunately right above the pockets are red colored lineal horizontal lines. I don't think those lines are part of the coat's design, there definitely is some printing malfunction. It is hard to see in the pictures advertised, you can see it in the pictures and video I have posted clearly. The material of the suit is fairly acceptable, actually better than expected. The child can actually wear it multiple times for various occasions. The suit emits grace along with acceptable stitching in every apparel along with the bowtie. The suit did arrive in a slide bag all folded up, so there were a number of wrinkles especially on the coat, its as if it had lost its shape. I will definitely need to steam iron it before it will be worn. Just like the coat has pockets the tailored pants also have two side pockets, and belt loops in case need of belt if the pants are loose. I'm actually glad I had ordered two sizes up because compared to his current measurements the suit is big on, especially the pants waist and length. I had measured the suit myself and below are the measurements. Pants Waist - 15.25 Inches Pants Length - 35.75 Inches Pant's Inseam 25 Inches Coat's Length - 24.5 Inches Coat's Shoulders - About 14.5 Inches Coat's Sleeve Length - 22 Inches Coat's Chest - 15.5 Inches In addition to the suit, I also received a solid colored light gray, bowtie. The bowtie has an adjustable strap, so you can set the bowtie to your comfort in the collar. You can wear it along the suit or without it if needed to match with something and still manage to look a show topper!. The coat has nice shoulder padding therefore it sits across the shoulders nicely having it hold its shape and style. Overall it's not a bad purchase, suits like these always come in handy for a unexpected or expected events. I'm glad I had purchased this suit I'm sure it'll come to use one day.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 10, 2026

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