SKU: 17301016964

MDF Radius Corners, Econo Qtr Rnd (accepts 3/4" plywood), 4" Radius, 5 11/16"W x 1-11/16"D x 97"L

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Description

MDF Radius Corners, Econo Qtr Rnd (accepts 3/4" plywood), 4" Radius, 5 11/16"W x 1-11/16"D x 97"LWhite River Hardwoods MDF Radius Corners Made in the USA 4 Econo Quarter Round SKU 4ECQ34 Accepts 3 4 Plywood 4 Radius 97 Length Double Refined MDF 5 11 16W 1 11 16D Ships LTL The 4 Econo Quarter Round for 3 4 plywood box construction. Same precise 4 radius geometry as the 4ECQ58 engineered for the additional depth required by 3 4 plywood. Double Refined MDF, made in the USA. Made in Fayetteville, AR The Only National MDF Radius Corner Manufacturer in

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

4″ Econo Quarter Round

SKU 4ECQ34 · Accepts 3/4″ Plywood · 4″ Radius · 97″ Length

Double Refined MDF · 5 11/16″W × 1 11/16″D · Ships LTL


The 4″ Econo Quarter Round for 3/4″ plywood box construction. Same precise 4″ radius geometry as the 4ECQ58 — engineered for the additional depth required by 3/4″ plywood. Double Refined MDF, made in the USA.

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

The same trusted 4″ Econo Quarter Round geometry, engineered to accept 3/4″ plywood — the standard for most full-height cabinet construction.

Product Details

Dimensions & Specifications

SKU Profile Radius Accepts Width Depth Length
4ECQ34 Econo Quarter Round 4″ Radius 3/4″ plywood 5 11/16″ 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

⌒

Econo Quarter Round — 4″ Radius

The Econo Quarter Round profile at 4″ radius, engineered specifically for 3/4″ plywood box construction. The slightly deeper profile (1 11/16″ vs 1 5/8″) accommodates the additional plywood thickness without shimming or scribing.

▣

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

Econo Quarter Round

Radius

4″

Accepts

3/4″ Plywood

Width

5 11/16″

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.

4ECQ34 — 4″ Econo Quarter Round, 3/4″ Plywood. Precision radius corners 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: 17301016964

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Theresa C.
Phoenix, US
★★★★★ 5
They Work
Husband struggles with cracking feet, he has tried so many home remedies these work great to keep the moisturizer on and the carpet dry!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 25, 2026
R
Verified Purchase
raymond jones
Lowell, US
★★★★★ 1
Not worth the time or money
Never buy these, they causes feet cramps and bad pain even if you use foot pain cream
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Reviewed in the United States on April 30, 2026
G
Verified Purchase
Greg from MidW
San Leandro, US
★★★★★ 3
Does the job but dangerous to walk with!
Does the job but dangerous to walk with: foot is sliding inside the sock if the foot was treated with cream or lotion prior. It is uncomfortable to sleep with but a necessary hurdle to heal your heels!
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Reviewed in the United States on December 24, 2025
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Texgurl
Fort Morgan, US
★★★★★ 4
Does the trick
Bought it with urea cream for my senior dad who was diabetes. Careful with it, it will tear
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Reviewed in the United States on April 6, 2026
A
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Amazon Customer
Waukegan, US
★★★★★ 5
The really work!
Bought these or a friend with severely dry cracked feet. The change was significant and immediate. They wore them around the house for a day and that night they could already feel the difference.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 12, 2026

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