USAGE－NOISESTOP DAC 40 and DAC 33 Acoustic Doors are double skinned metal panel doors specifically designed to provide optimum noise reduction combined with ease of operating. The DAC 40 Acoustic Doors has a nominal thickness of 100mm, is fitted with two cellular rubber peripheral edge seals, and gives an average noise reduction of 39db across the audible frequency spectrum. The DAC 33 Acoustic Doors has a nominal thickness of 50mm, is fitted with a single cellular rubber peripheral edge seal and gives an average noise reduction of 33db. NOISESTOP DAC 40 and DAC 33 Acoustic Doors are supplied complete with their own mounting frame and fixings to immediate fitting into prepared structural openings. Single and double leaf doors are available with the mail door leaf opening either to the right or left as required. Typical applications of the NOISESTOP DAC range of acoustic doors are to permit access into such areas as Turbine or Diesel engine Test Cells. Generator Plantrooms, Ventilation or Air Conditioning Plantrooms, Plenum Chambers, Industrial Process Rooms, Quiet Havens and Audiometric Facilities. Almost any size of NOISESTOP Acoustic Doors can be manufactured to meet customer individual requirements and stable type arrangements and access doors within larger machine entrance doors can be designed. It is recommended that for your particular application you consult a NOISESTOP engineer who will be pleased to assist you in the detailed layout of a NOISESTOP DAC door to meet your exact physical requirements.

CONSTRUCTION－The NOISESTOP DAC range of Acoustic Doors are manufactured from high quality mild steel panels spot welded together to form a sandwich construction of considerable strength. Held between the two skins of the door is an inert non flammable wool and plaster media which effectively absorbs primary and secondary acoustic energy incident on the doors inner surface. The structural integrity of the door and its mounting frame is essential to ensure efficient compression of the peripheral edge seals. The mounting frames supplied with each door are of all welded construction and furnished complete with anchor fixings or bolts to allow for mounting into existing structural openings (see details of alternative frames on the reverse side of this data sheet). Each NOISESTOP DAC Acoustic Doors is furnished with heavy duty lubricated hinges and a quick release catch mechanism allowing personnel to exit from the enclosed space even when the door has been locked shut. Inspection windows can be provided if necessary and standard NOISESTOP DAC Acoustic Doors are supplied primed ready for final painting by the customer. Alternatively doors can be supplied with external and internal faces finished in plastic coated steel or painted to the customer specification.

PHYSICAL：
NOISESTOP DAC 40 and DAC 33 Acoustic Doors can be furnished with many optional variations to suit the individual requirements of particular installations. Besides the provision of inspection windows when required and the choice of surface finish the table below shows the full range of options available when choosing your NOISESTOP DAC Acoustic Doors (Note: All details shown are for DAC 40 Acoustic Doors). aThe options required should be clearly stated at the time of enquiry but will be finally confirmed by NOISESTOP on a detailed drawing issued for every door an the time of order. Customer approval of this drawing is always obtained prior to manufacture to ensure compatibility of final design requirements. NOISESTOP DAC 40 Doors weigh approximately 70kg/m2 and DAC 33 Acoustic Doors approximately 40kg/㎡. It is imperative that the framework of all framework of all NOISESTOP DAC Acoustic Doors be plumb and square prior to final fixing as any major inaccuracies in the positioning of the frame may compromise the final acoustic performance achieved.