Pacific AD400 Acoustic Door Set STC/Rw 43


The AD400 is a tested acoustic door set designed to reduce sound transmission within buildings.

The AD400 is a hinged flush panel door that is suitable for interior use. It is available as a single or pair door set.

The thickness of the AD400 door leaf is 47mm with an approximate leaf weight of 35kg/m2

 Wall Type Acoustic Rating Door Application Max Leaf
Height (mm)
Max Leaf
Width (mm)
Steel Stud Wall
Timber Stud Wall
Masonry Wall
 STC/Rw 43 Single 2700 1200
Pair 2700 1200


  1. Please note that the maximum leaf width shown above is measured per door leaf.


Frame seals

The perimeter frame seals are self-adhesive seals mounted in the frame rebate, so are hidden when the door is closed.

Bottom seals

There are two options for the bottom seals:

Threshold Seal (Type T)

Compression Seal (Type B)

An aluminium threshold (natural anodised finish) with integral seal is fitted to the floor. In this case there is no seal required in the bottom edge of the door leaf. The height of the gap between the finished floor level and the bottom of the door must be set up carefully during installation of the door set so that the door will engage with the threshold seal as intended.


A neoprene seal on the bottom edge of the door leaf engages with a stainless steel threshold plate fitted to the floor.




The AD400 requires suitable latching in order for the frame seals to fully seal the gap between door leaf and frame.

Practically any standard door hardware can be used on the AD400, however the proposed hardware must be advised to Pacific Door Systems Ltd to assess the suitability, before manufacture.

Any penetrations through the leaf should be packed with acoustic materials (e.g. batts) wherever possible.

Concealed hinges are not an option on this doorset.

 Recommended latching points are shown in the below diagram. Pair doorsets require a designated inactive leaf which is secured top and bottom.

Product Options

Leaf Facings

The facings listed below are available for the AD400 door set

  • MDF
  • Timber Veneer
  • HPL decorative laminate (e.g. Formica)
  • Sheet Vinyl


  1. Of the above facings only those marked * may extend around the door edge.
  2. Other facings may be available, please contact Pacific Doors to discuss further options.

Leaf Edges

Paint-quality doors have unclashed edges.

Timber veneer faced doors are clashed on the vertical edges with solid timber.

Doors faced with decorative laminate or vinyl (e.g. Hospital doors) are capped on the vertical edges with an aluminium extrusion capping with natural anodised finish.


Frame Types & Profiles

Timber Frame

The timber frame profiles listed below are available for the AD400 door set


Steel Frame

The steel frame profiles listed below are available for the AD400 door set


Steel frames require packing of the frame during installation with fibrous insulation material (e.g. fibreglass, mineral wool or polyester batts).

For more in depth information on frame profiles and sizes, please see our Installation Instructions.

Meeting Stiles

The meeting stiles listed below are applicable to pair door sets only.


Wall Types

Door sets must be installed carefully with particular attention to the sealing of gaps, including around the frame to wall junction.

Product Optional Extras

Vision Panels

Glazing Type Maximum Glazed Area Max Height (mm) Max Width (mm) Glazing Bead STC/Rw Rating
Timber Aluminum
Soundstop 0.16m2 1000 860 43
Soundstop 0.45m2 1000 860 38


  1. Please note that the height and width of the vision panel must still fall within the maximum glazed area.
  2. Maximum glazed area is measured per door leaf.

Circular Vision Panels

Size allowance

Standard Cross Section

Standard Vision Panel Cross Sections

Timber Bead

Aluminium Bead

Sidelights and Overlights

Sidelights and overlights are not an option on this door set as it would impact the acoustic performance of the door set.


Overpanels are not an option on this door set as it would impact the acoustic performance of the door set.

Additional Door Options

Push or Kickplates

Kickplates of any kind can be surface mounted to this door set.

Acoustical Performance Graphs

Acoustical performance graphs

Thermal Insulation

This door leaf has a thermal insulation rating (R-value) of 0.739 Km2/W.

Technical Compliance Statement

Complete door sets are tested to ISO 140-3 in a purpose-built facility that meets the requirements of ISO 140-1.