SKU: 84396485625

MDF Radius Corners, 4 Econo Qtr Rnd (accepts 5/8" plywood), 4" Radius, 5 11/16"W x 1 5/8"D x 97"L

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Description

MDF Radius Corners, 4 Econo Qtr Rnd (accepts 5/8" plywood), 4" Radius, 5 11/16"W x 1 5/8"D x 97"LWhite River Hardwoods MDF Radius Corners Made in the USA 4 Econo Quarter Round SKU 4ECQ58 Accepts 5 8 Plywood 4 Radius 97 Length Double Refined MDF 5 11 16W 1 5 8D Ships LTL Where bent plywood fails and kerf cut corners fall short, the 4ECQ58 delivers a true 4 radius in Double Refined MDF consistent, paintable, and manufactured to spec every time. Accepts 5 8 plywood box construction. Made in Fayetteville, AR The Only National MDF Radius Corner

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

4″ Econo Quarter Round

SKU 4ECQ58 · Accepts 5/8″ Plywood · 4″ Radius · 97″ Length

Double Refined MDF · 5 11/16″W × 1 5/8″D · Ships LTL


Where bent plywood fails and kerf-cut corners fall short, the 4ECQ58 delivers a true 4″ radius in Double Refined MDF — consistent, paintable, and manufactured to spec every time. Accepts 5/8″ plywood box construction.

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

Where bent plywood gaps and kerf-cut corners crack, the 4ECQ58 holds its radius cleanly — Double Refined MDF, milled to spec, every piece the same.

Product Details

Dimensions & Specifications

SKU Profile Radius Accepts Width Depth Length
4ECQ58 Econo Quarter Round 4″ Radius 5/8″ plywood 5 11/16″ 1 5/8″ 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 provides a clean radius transition at cabinet and furniture corners. The quarter round geometry wraps the corner fully — no exposed substrate, no raw edge, no gap.

▣

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 5/8″ Plywood

Engineered specifically for 5/8″ 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

5/8″ Plywood

Width

5 11/16″

Depth

1 5/8″

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 5/8″ 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.

4ECQ58 — 4″ Econo Quarter Round Radius Corner. The one the cabinetry industry keeps coming back to.


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: 84396485625

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Olivia Hill
Draper, US
★★★★★ 5
Cute shoes
Size: 8.5, Color: Brown, Size: 8.5, Color: Brown
Let a friend borrow these for prom. They looked soo good. Beautiful shoes, comfortable, nice color, and survived dancing the night away. I would recommend these and think they are a great value. The fit is true to size as I’m an 8.5: /9 and these fit me perfect. The photo is of my shoe on a size 8 foot
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Chelsea, US
★★★★★ 5
Beautiful
These strappy stiletto sandals are stylish and perfect for dressing up any outfit! The design is elegant with a comfortable fit for short wear, making them great for parties, dates, or summer events. Cute and versatile dress heels!”
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Deborah Margarita Rodríguez
San Leandro, US
★★★★★ 5
Worth Every Penny!
Size: 14, Color: Taupe, Size: 14, Color: Taupe
"I absolutely adore these sandals! They look elegant and minimal, making them perfect for dressing up or keeping it casual. Crucially for me, they are incredibly comfortable. The straps are soft and don't dig in at all, and I could walk in them all day. The quality seems top-notch. Highly recommended!"
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Judith Watson
Houston, US
★★★★★ 5
Comfy sandles at affordable prices.
Size: 7.5, Color: Tan, Size: 7.5, Color: Tan
Light weight and very comfortable sole. Size chart is right on. If you need back strapped sandles due to age or disability. These are Great at a Great price. Straps are comfortable. Very cute.
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TIsbell
Pawtucket, US
★★★★★ 4
Design and comfort
Size: 7.5, Color: Taupe
Light weight, seems to be of good quality. Comfortable so far. True to fit
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Reviewed in the United States on June 4, 2026

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