High-Performance Subsill Threshold – Thermal Break, Weatherproof For Outward Opening | 17–22mm Gap Seal

Designed for professionals, homeowners, and commercial installations, this premium subsill threshold is the perfect solution for sealing gaps, improving energy efficiency, and ensuring safe, smooth entry.

Key Features & Benefits:

• Universal Fit – Perfect for outward opening doors with PVC, timber, composite, aluminium, fibreglass, steel & carbon fibre frames

• Thermal Break Technology – Reduces heat loss, prevents cold bridging, and boosts insulation performance

• Seals Gaps 17–22mm – Superior weatherproofing against draughts, rain & dust

• Pre-Drilled Drainage Holes – Effective water management & long-lasting performance

• Non-Slip Safety Surface – Provides secure footing even in wet conditions

• Carpet-Friendly Design – Smooth transition without damaging flooring

• Easy Installation – Can be fitted as the fourth frame side or retrofitted

💡 Perfect for: Homes, offices, workshops, and commercial properties needing superior threshold sealing and thermal efficiency.