Product Overview
XL Arctic White 9" x 18" Corner Panel is an extra-large, natural stone L-shaped corner piece engineered to deliver seamless 90-degree transitions for stacked stone ledger panel installations. Crafted from genuine Arctic White quartzite, this corner panel features a bright, snow-white field with subtle icy silver undertones and a delicate crystalline sparkle in a natural splitface texture.
Designed as a two-piece stepped "L" corner set (with a long leg and a short leg forming a 9" height profile), it eliminates raw cut edges and exposed vertical seams at outside corners. Scaling up traditional 6-inch ledger corners to an extra-large 9-inch height, it accelerates installation across grand fireplace corners, exterior building columns, and feature wall returns—matching perfectly with standard 9" x 24" XL Arctic White flat ledger panels.
Technical Specifications
| Technical Property |
Value / Specification |
Notes / Compliance |
| Material Type |
100% Genuine Quartzite |
Natural Splitface Stone |
| Panel Format |
2-Piece Interlocking "L" Corner Set |
Outside 90° Corner Piece |
| Nominal Dimensions |
9" H x 18" L (Combined Leg Reach) |
XL Corner Panel Proportion |
| Thickness |
Approx. 3/4 in. to 1-1/4 in. (19 mm – 32 mm) |
Dimensional Heavy Relief |
| Surface Finish |
Natural Cleft / Splitface |
Rough-Hewn Crystalline Sparkle |
| Color Profile |
Arctic White (Bright White, Icy Silver & Quartz Sparkle) |
Low-to-Moderate Shade Variation (V2) |
| Edge Detail |
Precision Mitered/Stepped 90° L-Corner |
Seamless Outside Corner Joint |
| Recommended Applications |
Exterior Pillars, Fireplace Corners, Outdoor Kitchens, Wall Returns* |
Interior & Exterior Vertical Corners |
*For exterior or high-moisture applications, confirm site-specific substrate load capacity, waterproofing, and natural stone setting requirements prior to installation.
Recommended Applications
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Two-Story Fireplace Chimneys & Columns: Wraps 90-degree outside corners on grand fireplace surrounds and chimney breasts without exposed saw-cut edges or grout joints.
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Exterior Building Pillars & Porticos: Creates an authentic, heavy stacked-stone column appearance on home entryways, patio pillars, and retaining wall ends.
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Commercial Feature Wall Returns: Delivers clean, continuous stone wrapping around reception desk feature walls, hotel lobbies, and elevator banks.
Installation & Handling Guidelines
⚠️ IMPORTANT: NATURAL STONE LEDGER CORNER INSTALLATION PROTOCOL
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Install Corners First: Always set your outside corner L-panels first before laying flat ledger panels. Alternate (stagger) long and short legs on every row to prevent vertical alignment seams up the corner.
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Pure White LFT Thin-Set Mortar Required: Install using a high-performance, polymer-modified Large & Heavy Tile (LFT) pure white thin-set mortar (ANSI A118.4 / ANSI A118.15). White mortar prevents dark shadowing behind translucent white quartzite pieces.
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Tight-Joint Installation (No Grout): Corner panels are engineered to butt tight against one another and adjacent flat panels without grout lines.
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Substrate Load Capacity: Ensure concrete, masonry, or cement backer board substrates are structurally rated to support heavy stone loads (approx. 9–11 lbs per sq. ft.).
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Pre-Sealing: Apply a high-quality penetrating natural stone sealer after installation to protect against dirt accumulation, water absorption, and environmental staining.
Care & Maintenance
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Routine Cleaning: Dust or vacuum textured stone crevices using a soft brush attachment. Clean periodically with warm water and a neutral pH natural stone cleaner.
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Avoid Harsh Chemicals: Do not use acidic cleaners, vinegar, bleach, or high-pressure power washers at close range, which can damage natural quartzite surfaces.
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Periodic Resealing: Reapply a penetrating stone sealer every 2 to 4 years on exterior installations to preserve stain defense and freeze-thaw durability.
Design Profile
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Aesthetic Inspiration: Modern Minimalist, Alpine Luxury, Grand Architectural, Scandinavian Clean.
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Visual Advantage: Wraps corners smoothly without raw saw-cut stone edges, giving outside corners the substantial look of solid, hand-laid masonry blocks.
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Complementary Finishes: Arctic White XL 9x24 flat ledger panels, light oak or dark walnut millwork, matte black or brushed brass hardware, and concrete or marble flooring.
Frequently Asked Questions
Why use factory-made corner L-panels instead of miter-cutting flat ledger panels at 45 degrees?
Factory-made L-panels feature finished splitface stone on both outer faces, creating a seamless, natural corner. Miter-cutting flat panels on site leaves raw, untextured saw lines exposed at the corner joint.
How do I stagger the corner L-panels during installation?
Flip the corner pieces on alternating rows (row 1: long leg left; row 2: long leg right) so the vertical seams where corner pieces meet flat ledger panels are staggered naturally across the wall.
Is Arctic White XL natural stone frost-proof for cold outdoor climates?
Yes, provided corner panels are installed using polymer-modified freeze-thaw rated white mortar, proper wall flashing to prevent water pooling behind the stone, and an exterior penetrating stone sealer.
