SS ThruWall Stainless Steel Outside Corner

PROSOCO SS ThruWall Stainless Steel Outside Corner is a pre-formed 304 stainless steel corner piece that carries through-wall flashing around an external masonry corner.

What it does

Factory-formed geometry gives a clean, continuous flashing transition at outside corners — replacing the failure-prone hand-folded fabric details that are a common source of veneer leaks. Sized to match PROSOCO's ThruWall flashing system for a sealable transition.

When and where to use it

• External corner transitions in through-wall flashing runs
• Cavity wall and masonry veneer construction
• Used with PROSOCO ThruWall fabric flashing and accessories

Key benefits

• 26 gauge 304 stainless steel — spot-welded and soldered
• Pre-formed factory geometry for consistent corners
• Compatible with the full PROSOCO ThruWall accessory line
• Sold in 25-piece boxes