White PVC Hopper Window Frame 600x400mm Compact Basement Ventilation

Description

• Compact bottom-hung hopper design opens inward from the top, directing airflow upward — ideal for basement windows, half-baths, and low-positioned openings where outward-swinging designs are impractical.
• 600x400mm frame dimensions fit standard rough openings commonly found in below-grade installations, making it a direct replacement for existing frames of similar size.
• Constructed from a 60mm multi-chamber PVC profile with steel reinforcement inserts at all corner joints, ensuring structural rigidity in a compact form factor.
• Top-mounted friction hinges allow the sash to be held at any angle between fully closed and a comfortable 30-degree opening, giving precise control over ventilation volume.
• Supplied with pre-cut glazing beads, compression seals, and mounting clips; suitable for single or double-glazed panels up to 24mm thickness.