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

Sale price$87.30 Regular price$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.

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.

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.

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

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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E J
Massapequa, US
★★★★★ 5
Decent customer service
Color: Absolute Black, Size: Z1 Motor + Batteries
My frother worked well for a time and through several battery changes. Then the blending stick/wand fell off and completely detached from the handheld part/motor. I contacted customer service and they originally tried to get me to upgrade via a sales tactic and pay the difference for a 'premium model'. I said no thank you and did not ask for anything else. They contacted me back and offered to send me two of the ones I had so that I would have a back up - but without the batteries or stand. I did appreciate their prompt responses, just less gimmicks would have been nice.
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Reviewed in the United States on April 9, 2026
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Verified Purchase
Amazon Customer
Battle Creek, US
★★★★★ 5
awesome company
Color: Black, Size: Z1 Motor + Batteries
I ordered one of the frothers and it stopped working in about 1 month. The company was so pleasant to work with and immediately sent me a new one to replace the one I had. They offered me an option of a rechargeable one with a little more cost or the battery powered free. I chose the battery powered and received it quickly. They are an awesome company with great prices and stand behind their products. Nice to see this in a company. Will be buying more items from them in the future!!
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Reviewed in the United States on May 4, 2026
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Verified Purchase
Jacqueline Coffey
Port Orchard, US
★★★★★ 5
Worth the price
Color: 35 - Lavender, Size: King
The best thing about these king-size sheets is the deep pockets—they stay securely in place and fit the mattress perfectly. They wash beautifully, resist wrinkles, and are incredibly soft and comfortable. A great combination of quality, comfort, and convenience.
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Reviewed in the United States on May 24, 2026
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Verified Purchase
Judy L.
Lake Worth, US
★★★★★ 5
Get the best sleep ever - soft, stay cool, don't wrinkle or pill after washing, and stay on.
Color: 25 - Burgundy, Size: Full
Prior to buying this set of sheets, I tried just the pillow cases. I had a more expensive set of Egyptian cotton sheets and pillow cases, but every night I had to flip the pillow because it was too warm even when the room was cool. I bought the pillow cases for both my husband and myself, and we both saw an immediate improvement in our Samsung watch sleep scores. The pillow cases were so soft and I no longer woke up during the night with my head being too warm. The sheets I had been using were supposed to be for thick mattresses, and fit at first. I have a 12 inch mattress, and after a few washings, these sheets wouldn't stay on one corner of the mattress. There was no way I could stretch it over all four corners. Since I was so happy with the pillow cases of this brand, I decided to buy the sheet set. As I normally do, I washed and dried the set before using them. The sheets are every bit as soft and comfortable as the pillow cases, and they were wrinkle free with absolutely no pilling after washing. Putting them on my 12 inch mattress was a breeze. They fit over all the corners and even tucked in on all sides. The sheets are every bit as soft and comfortable as the pillow cases I had bought previously. Since I put them on my bed when warm weather was coming, I put away some of the blankets and comforters I had on my bed for the winter. I found that these sheets, are not quite as warm as my previous heavier sheets. For me this is a good thing as I used to wake up in the night sweating with my PJ's stuck to me. When I pushed down the covers, I would be freezing because my PJ's were wet. Since my bedroom is usually cool, I put some of the blankets back on my bed, but now I don't wake up sweating. Now I can use my blankets without sweating and having to push them to the bottom of the bed during the night, and my sleep score, measured by my Samsung watch, is consistently 10 or more points higher than it was before using these sheets. If you tend to sleep warm, these sheets would be perfect for you. At this point, I very much prefer these sheets over the stiffer, heavier Egyptian cotton sheets that don't breath. I should also mention that I bought the burgundy color that is a true burgundy - not red. UPDATE 7/25/22: I have been using these sheets for almost 1 1/2 years, and they have been washed and dried multiple times. They still look and feel as good as the first time I used them. They have not pilled or shrunk, and still fit on my bed as well as they did when they were new. Although I bought the set for a double bed, the pillow cases are large enough to fit the queen sized pillows I have, and are long enough the enveloping flap on the ends of them is really not needed. I still love this set of sheets, and will likely buy another set. UPDATE 08/10/23: I have been using this set of sheets for about 2 1/2 years, I and I still love them. I have been using only this one set of sheets. I take them off my bed, machine wash and dry them, and put them back on. They have not shrunk, pilled, or faded, and look as good as the day I bought them. I like these so much better than cotton sheets I have had in the past, including Egyptian cotton. They are so soft, not stiff at all. I decided to buy another set in case they stop selling them and thought I would update my review while I was here. I hope this review was helpful for you. I will update my review if my opinion changes.
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Reviewed in the United States on May 11, 2022
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Tracey Hawkins
Louisville, US
★★★★★ 5
Extra deep queen sheet set 6 piece
Color: 18 - Navy Blue, Size: Queen
These sheets fit my 17" mattress perfectly. They dop pop off even after several days of getting in and out of bed. On occasion they do need to be pulled down. They are a great value for the money, I will be buying more in different colors. I love that they are wrinkle free and so soft. They're great if you have other colors to switch the flat or fitted sheet to create a new look.
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Reviewed in the United States on May 12, 2026

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