Description
The FDBU20-920 Fire Door Bottom Upgrade (20mm) is a high-performance fire and smoke seal designed to improve the safety, integrity, and compliance of existing fire door assemblies. This bottom upgrade system provides a reliable seal against smoke, flames, and sound, helping maintain fire resistance and meeting the latest building code requirements.
Engineered for easy retrofitting, the FDBU20-920 fits seamlessly to the base of timber or metal fire doors without compromising door function or appearance. The durable aluminum carrier houses a high-quality intumescent and silicone seal, which expands under heat to prevent the passage of smoke and fire.
Ideal for commercial, residential, and institutional applications, this 20mm upgrade ensures doors perform at their highest safety standards while reducing noise and air leakage.
Key Features
Fire-Rated Protection – Designed to maintain door integrity during fire exposure.
Smoke & Acoustic Seal – Prevents the spread of smoke and reduces sound transmission.
Easy Retrofit Installation – Suitable for upgrading existing fire-rated doors.
Durable Construction – Aluminum profile with long-life silicone or intumescent seal.
Neat Appearance – Discreet design suitable for all interior finishes.
Applications
Commercial offices and corporate buildings
Hotels, schools, and hospitals
Residential and apartment fire doors
Industrial and institutional facilities








