The Gueule de Loup (French for "Wolf's Mouth") wooden window is the hallmark of traditional French architecture, inseparable from the prestigious Haussmann-style apartments in Paris. Its name refers to the unique interlocking meeting stile where the two sashes meet, creating a seamless, airtight, and exceptionally beautiful connection.
Technical Specifications
Installation Depth: 73 mm frame / 58 mm sash
Thermal Insulation: 1.1 Uw (for Ug = 1.1 with Ultimate spacer)*
Timber Quality: 3-layer glued solid wood with a 4-layer protective coating.
Wood Species: Pine, Spruce, Meranti, or Oak (FSC Certified options available).
Glazing: Double glazing packages up to 24 mm wide.
Sealing: 2 high-quality gaskets for superior airtightness.
Hardware: Authentic Espagnolette (basquille) locking system with decorative handles.
Hardware Colors: White (RAL9016), Black (RAL9005), or Antique Gold.
