STS 422 Drop Seal
Improve the performance of your doors with the STS 422 Drop Seal, a high-quality rebated automatic drop seal designed to reduce the passage of fire, smoke, sound, draughts, dust, and insects through the gap beneath the door. Suitable for a wide range of timber doors, the STS 422 features a fully adjustable mechanism and can be trimmed on-site to achieve a precise fit.
With an acoustic rating of up to 41dB and a maximum seal drop of 14mm, the STS 422 provides an effective solution for enhancing fire, smoke and acoustic performance in both commercial and residential applications.
Key Features
Helps restrict the passage of fire, smoke, sound, draughts, dust, and pests
Fully adjustable for optimum sealing performance
Cut to size for easy installation and a tailored fit
Suitable for gaps of up to 14mm
Acoustic performance tested to 41dB
Durable and reliable automatic sealing mechanism
Construction
Casing: T60/60 Grade Aluminium
Seal: Neoprene / Butyl
Mechanism: Steel / Nylon
Available Sizes
530mm
730mm
830mm
925mm
930mm
1030mm
1130mm
Trimming Information
All standard stock sizes can be trimmed by up to 200mm to suit your door dimensions. Please note that the 330mm model can only be trimmed by a maximum of 70mm.
Ideal for use in fire-rated, acoustic and smoke control door assemblies where effective threshold sealing is required.