List of companies from research coverage that are profiled in the study
                                                        
                                                            
                                                                - Lindab (Sweden)
 
                                                            
                                                                - DB Noise Reduction (Canada)
 
                                                            
                                                                - Vibro-Acoustics (Canada)
 
                                                            
                                                                - Hydrohobby Hydroponics Ltd. (United Kingdom)
 
                                                            
                                                                - P&G Fabrications Ltd (United Kingdom)
 
                                                            
                                                                - Kinetics Noise Control (Ireland)
 
                                                            
                                                                - Rocvent Inc (Canada)
 
                                                            
                                                                - Fans and Spares Ltd (United Kingdom)
 
                                                            
                                                                - HG Hydroponics (United Kingdom)
 
                                                            
                                                                - Pacific ventilation (Australia)
 
                                                            
                                                        
                                                    
                                                
                                                
                                                    
                                                        
                                                            Additional players considered in the study are as follows:
                                                            
                                                                Vents Axia (United Kingdom)
                                                                ,
                                                            
                                                                BerlinerLuft. Technik GmbH (Germany)
                                                                ,
                                                            
                                                                Fairflow Ventilation (India)