MF (FH+RD) 51096 Threshold Seal Strip 960mm Parallel Drop Self-Extinguishing Silicone

Product Overview

The MF (FH+RD) Threshold Seal Strip, 960mm (51096), is an automatic drop-down seal designed for metal, wood, or PVC doors in both commercial and residential installations. It activates when the door closes, sealing the gap beneath to enhance acoustic insulation and prevent smoke and fire ingress. Suitable for doors wider than 835mm, it achieves up to 54 dB sound reduction and features a durable, self-extinguishing silicone seal with an aluminum profile.

A particularly differentiating feature is its parallel drop-down movement with automatic adjustment to floor unevenness, eliminating contact and abrasion with the floor surface. This minimizes the risk of surface damage and simplifies maintenance for facility managers. The MF strip is specifically well-suited for bulk procurement in projects requiring certified fire and smoke resistance, such as hotels, office complexes, and public institutions.

Key Features

• Parallel drop-down action ? smooth, non-abrasive movement prevents floor damage


• Height adjustment ? up to 16 mm, precise fine-tune via 3 mm Allen key for different floor gaps


• Acoustic insulation up to 54 dB ? suitable for noise-sensitive environments like conference rooms or studios


• Self-extinguishing silicone seal ? enhances fire and smoke barrier performance


• Steel mounting brackets and self-tapping screws ? robust, lateral fixation for metal doors


• Automatic floor compensation ? adapts to uneven surfaces for consistent sealing


• Profile dimensions 19.8 × 20 mm ? compact size for concealed installation

Technical Specifications

• Length: 960 mm


• Minimum Door Width: >835 mm


• Profile Dimensions: 19.8 mm × 20 mm


• Mounting Slot Width: 20.3 mm


• Mounting Slot Depth: 20.5?25 mm


• Maximum Seal Drop Height: 16 mm


• Acoustic Attenuation: up to 54 dB


• Seal Material: Self-extinguishing silicone


• Profile Material: Aluminum


• Activation Side: Hinge side (unilateral)


• Height Adjustment Tool: 3 mm Allen key


• Mounting: Steel brackets with self-tapping screws

Applications

Used for soundproof, smoke-control, and fire-rated doors in commercial buildings, hotels, office complexes, public institutions, and residential settings. Compatible with metal, wood, and PVC door leaves, including double-leaf doors (in combination with additional bolts). Especially applicable for doors requiring efficient acoustic insulation and certified resistance to smoke and fire.

Packaging & Shipping

Standard export packaging. Each unit includes the threshold seal strip, steel mounting brackets, self-tapping screws, and installation instructions. Mounting kit for metal doors is supplied as part of the package.