Sunstone SWC3SP90 3"×3" 90° Wall Corner Spacer Panel
A Matched Stainless Corner Panel That Closes Out a 90° Wall Cabinet Junction
The Sunstone SWC3SP90 forms a tight inside 90° corner between two wall cabinets or opposing spacer panels — finishing a corner transition that would otherwise sit open or unfinished.
The Sunstone SWC3SP90 is a 3" × 3" 90° corner spacer panel built for the front of full-height wall cabinet runs where two cabinets meet at an inside corner. In 304 stainless steel with a matching #4 brushed finish, it creates a clean corner transition between two opposing wall cabinets or spacer panels, closing out the gap at the corner while also serving as a cover for debris or loose wiring near the crown molding line. It installs during wall cabinet assembly using screw-fixed mounting and includes two wall support rails that interlock with adjacent cabinet rails for a continuous horizontal support line.
What the SWC3SP90 Solves
A corner junction between two wall cabinet runs needs a purpose-built piece — the SWC3SP90 is that piece, sized specifically for a 90° inside corner.
Tight Inside Radius Corner — Purpose-Built for Cabinet Junctions
Forms a clean 90° inside corner between two wall cabinets or opposing spacer panels — the piece that finishes a corner transition instead of leaving it open or improvised.
Two Interlocking Wall Support Rails Included
Includes two wall support rails that interlock with adjacent cabinet rails, maintaining a continuous horizontal support line through the corner rather than breaking structural support at the junction.
Matched 304 Stainless Finish — 1" Framed Construction
Built from 304 stainless steel in Sunstone's #4 brushed finish with a 1" framed, sturdy profile — matching the wall cabinet line at the corner instead of leaving a visibly different material or finish.
What's Included
SWC3SP90 Package
- Sunstone SWC3SP90 3" × 3" 90° corner spacer panel (1 unit)
- (2) Wall support rails
- Screw-fixed mounting hardware
Sunstone SWC3SP90 Specifications
| Model | SWC3SP90 |
|---|---|
| Product Type | 3" × 3" 90° corner spacer panel for full-height wall cabinet front |
| Material | 304 Stainless Steel |
| Finish | #4 Brushed |
| Corner Geometry | 90° inside radius corner |
| Construction | 1" framed sturdy construction |
| Mounting | Screw-fixed (open screw holes) |
| Included Components | (2) wall support rails, interlocking with adjacent cabinet rails |
Dimensions
| Dimensions | 3" × 3" width; 42" height (add approx. 2" for crown molding, per manufacturer note) |
|---|
Warranty & Buyer Assurance
- Manufacturer's Warranty — Covered by Sunstone Metal Products' 5-year limited warranty, honored directly by Sunstone. [[FLAG: the D&D listing states "Lifetime Structure Warranty" — this conflicts with Sunstone's own authorized dealer documentation, which explicitly names spacer panels (including 90° corner spacer panels) under the 5-year warranty tier alongside handles, peg legs, kick plates, and end panels. The lifetime warranty applies to cabinet structure and finish, not spacer panels. Update the D&D listing to reflect the correct 5-year term]]. Labor is not included.
- Free Shipping on orders over $100 to the contiguous 48 states.
- 45-Day Returns — Deck & Den's 45-day return policy applies to this item.
- Price Match Available — found a lower authorized-dealer price? Contact us and we'll match it.
Manuals & Documents
- Installation Guide (PDF) — mounting instructions for cabinet accessories including corner spacer panels.
- Care and Maintenance Guide (PDF) — recommended cleaning and upkeep for 304 stainless steel components.
- Sunstone Full Product Catalog (PDF) — complete Sunstone product line reference.
Sunstone SWC3SP90 — Frequently Asked Questions
When do I need a corner spacer panel instead of a standard spacer panel?
Use the SWC3SP90 specifically where two wall cabinets or spacer panels meet at a 90° inside corner. A standard spacer panel like the SWC3SPF or SWC6SPF is for a straight-line gap between two cabinets in the same run, not a corner junction.
How does this panel mount, and what's included?
The panel installs with screw-fixed mounting through open screw holes during wall cabinet assembly. It includes two wall support rails that interlock with adjacent cabinet rails to maintain a continuous horizontal wall support line through the corner.
Does this panel add height for the crown molding line?
Yes — per the manufacturer, plan for approximately 2" of additional height beyond the panel's stated dimensions to align with crown molding used on full-height and upper wall cabinets.
Does this panel match the finish of other Sunstone wall cabinets?
Yes — the SWC3SP90 is built from 304 stainless steel with the same #4 brushed finish used across Sunstone's wall cabinet line, so the corner reads as a continuous, matched transition rather than a visibly different piece.
What is Sunstone's warranty on this panel?
The SWC3SP90 is covered by Sunstone's 5-year limited warranty. Sunstone's authorized dealer documentation explicitly names spacer panels, including 90° corner spacer panels, under the 5-year tier alongside handles, peg legs, kick plates, and end panels — distinct from the lifetime warranty that covers cabinet structure and finish. Labor is not included.