Lindab Magestic Galvanised Steel Gutter Corner Overflow Protector OSK
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Keep water inside the gutter where it belongs with the Lindab Magestic Galvanised Corner Overflow Protector — OSK, 100 mm. Designed for high-flow areas such as roof corners and bay returns, this neat clip-on deflector raises the effective front edge of the gutter to curb spillover during cloudbursts. It’s a fast, tool-free retrofit that simply hooks over the rolled bead, making it ideal for upgrading existing runs as well as new installs. Formed from Lindab’s Magestic galvanised steel, the zinc–magnesium enhanced coating stabilises the surface and protects zinc’s naturally porous structure, delivering excellent corrosion resistance with minimal upkeep—even on exposed or coastal sites. Use OSK at corners and partner with the straight-run version OSKR where needed to manage surge points along long elevations. Supplied in unpainted Magestic Galvanised that ages to a refined dark-grey patina; coordinating components are also available across the Lindab Rainline painted range in 12 colours for a fully colour-matched system.
Technical Specification
- Assembly Video
- PDFs: Assembly Instructions | Technical Details
- Brand: Lindab
- Range: Magestic (Half Round)
- Product Type: Corner Overflow Protector
- Model/SKU: OSK100MG
- Finish/Colour: Magestic Galvanised (unpainted); Rainline painted components available in 12 colours
- Material: Galvanised steel with zinc–magnesium corrosion protection
- Size Compatibility: 100 mm Lindab half round steel gutter
- Use Case: Reduces overflow at high-flow sections (corners/bays); pair with OSKR for straight runs
- Installation: Hooks over gutter bead; easy retrofit—no sealant or fixings required
- Key Features: Discreet deflection; fast tool-free fit; enhanced corrosion resistance; low maintenance; recyclable steel
- Appearance: Weathers naturally to dark-grey patina in 3–5 years
- Warranty: 10 Year (Magestic)
- Manufacturer: Lindab