1712 alu. DL 730 mm (US-HF-001) Drop Down Door Seal Dual Adjustment 44dB Acoustic

Product Overview

Threshold drop seal 1712 alu. DL 730 mm (US-HF-001) is intended for installation in wooden or PVC doors, including those specified for soundproof, smoke-control, and fire-rated applications. Its outer casing is made from aluminum, and the sealing profile uses black silicone, providing durability and compatibility for interior and functional doors in commercial and institutional environments. Acoustic insulation performance is rated at 44dB for a 6 mm gap, making it suitable for projects where sound, smoke, and fire containment is specified.

The key differentiator of this model is its dual adjustment mechanism, allowing both the extension length and the angle of the seal to be precisely set. This feature eliminates common alignment issues during installation and ensures a tight, customized fit for variable threshold conditions, which is particularly important when retrofitting or refurbishing door assemblies in hotels, offices, or healthcare settings.

Key Features

• Dual adjustment?enables precise control of extension length and seal angle for improved fit


• Acoustic insulation 44dB?certified performance for doors with up to 6 mm threshold gap


• Aluminum outer casing?provides robust protection for the sealing mechanism


• Black silicone sealing profile?resilient to wear and maintains flexibility


• Maximum sealing height 18 mm?suitable for most commercial door gaps


• Groove installation?requires prepared groove of 12 x 28.5 mm for flush mounting


• Shortenable?seal length can be trimmed up to 100 mm for exact door width

Technical Specifications

• Seal Length: 730 mm


• Material (Casing): Aluminum


• Material (Seal): Black silicone


• Acoustic Insulation: 44 dB (6 mm gap)


• Maximum Sealing Height: 18 mm


• Installation Groove: 12 x 28.5 mm


• Adjustments: Dual (extension and angle)


• Shortening Limit: Max 100 mm


• Compatible Door Types: Wood, PVC

Applications

Used in wooden or PVC doors across commercial, hospitality, healthcare, and public-sector buildings requiring enhanced acoustic insulation, smoke control, and fire protection. Suited for soundproof, smoke-proof, and fire-rated doors, including threshold sealing for bulk renovation projects and OEM door manufacturing.

Packaging & Shipping

Standard export packaging. Unit includes drop seal body, pre-attached sealing profile, and installation accessories. Instruction manual included for correct groove preparation and mounting.