AIR QUALITY ENGINEERING
                                    
                            MERV 17 (HEPA) 2000 CFM, UPGRADE
                        
                                                                
                             #41120-UPGRADE
                        
                                    
                    
                                                    $1,964.000
                                            
                
            
                                    
                            22 LB. CARBON MODULE, M33 ONLY
                        
                                                                
                             #41123
                        
                                    
                    
                                                    $1,429.600
                                            
                
            
                                    
                            MERV 8 (35%) HIGH-CAPACITY
                        
                                                                
                            PLEATED PREFILTER 12" X 24" X 4" #41124
                        
                                    
                    
                                                    $52.800
                                            
                
            
                                    
                            MERV14 (90-95%) EXTENDED SERVICE FILTER
                        
                                                                
                            24" X 24" X 12" #41134
                        
                                    
                    
                                                    $872.800
                                            
                
            
                                    
                            MERV13 (80-85%) EXTENDED SERVICE FILTER
                        
                                                                
                            24" X 24" X 12" #41135
                        
                                    
                    
                                                    $622.400
                                            
                
            
                                    
                            MERV 14 EXTENDED SERVICE FILTER
                        
                                                                
                            12" X 24" X 12"(90-95%) #41136
                        
                                    
                    
                                                    $529.600
                                            
                
            
                                    
                            MERV13 (80-85%) EXTENDED SERVICE FILTER
                        
                                                                
                            12" X 24" X 12" #41137
                        
                                    
                    
                                                    $1,091.200
                                            
                
            
                                    
                            MERV 17 (HEPA) FILTER REPLACEMENT
                        
                                                                
                             #41142
                        
                                    
                    
                                                    $1,063.200
                                            
                
            
                                    
                            MERV 8 PLEATED PREFILTER (35%)
                        
                                                                
                            24 X 24 X 4" #41143
                        
                                    
                    
                                                    $67.200
                                            
                
            
                                    
                            ALUMINUM MESH IMPRINGER 24"X24"X2"
                        
                                                                
                             #41146
                        
                                    
                    
                                                    $189.600
                                            
                
            
                                    
                            MERV16 (95% DOP) EXTENDED SERVICE FILTER
                        
                                                                
                            24" X 24" X 12" #41160
                        
                                    
                    
                                                    $935.200
                                            
                
            
                                    
                            MERV16 (95% DOP) EXTENDED SERVICE FILTER
                        
                                                                
                            12" X 24" X 12" #41161
                        
                                    
                    
                                                    $796.000
                                            
                
            
                                    
                            50 LB CARBON REFILL
                        
                                                                
                             #41165
                        
                                    
                    
                                                    $778.400
                                            
                
            
                                    
                            CARTRIDGE FILTER
                        
                                                                
                             #41167
                        
                                    
                    
                                                    $483.200
                                            
                
            
                                    
                            MERV 17 HEPA FILTER - REPLACEMENT
                        
                                                                
                             #41168
                        
                                    
                    
                                                    $958.400
                                            
                
            
                                    
                            ALUMINUM MESH PREFILTER
                        
                                                                
                            23 3/8" X 11 3/8" X 2" M33 #41170
                        
                                    
                    
                                                    $91.200
                                            
                
            
                                    
                            MERV 11 (65%) HIGH-CAPACITY
                        
                                                                
                            PLEATED PREFILTER 24" X 24" X 4" #41173
                        
                                    
                    
                                                    $87.200
                                            
                
            
                                    
                            FRAME FOR MEDIA PADS, 24" X 12" X 2"
                        
                                                                
                            2 REQ #41179
                        
                                    
                    
                                                    $135.200
                                            
                
            
                                    
                            MERV 13 (85%) MIST BAG, 12" X 24" X 26"
                        
                                                                
                             #41181
                        
                                    
                    
                                                    $212.000
                                            
                
            
                                    
                            MERV 14 (95%) MIST BAG, 12" X 24" X 26"
                        
                                                                
                             #41182
                        
                                    
                    
                                                    $291.200
                                            
                
            
                                    
                            MERV 13 (85%) RIGID MIST FILTER
                        
                                                                
                            12" X 24" X 12" #41184
                        
                                    
                    
                                                    $331.200
                                            
                
            
                                    
                            MERV 14 (95%) RIGID MIST FILTER
                        
                                                                
                            12" X 24" X 12" #41185
                        
                                    
                    
                                                    $444.000
                                            
                
            
                                    
                            MERV 14 (95%) RIGID MIST FILTER
                        
                                                                
                            24" X 24" X 12" #41186
                        
                                    
                    
                                                    $626.400
                                            
                
            
                                    
                            MERV 13 (85%) RIGID MIST FILTER
                        
                                                                
                            24" X 24" X 12" #41187
                        
                                    
                    
                                                    $270.400
                                            
                
            
                                    
                            2" IMPINGER FILTER
                        
                                                                
                            FOR MB 500 & MB 850 #41205
                        
                                    
                    
                                                    $72.000
                                            
                
            
                                    
                            HO TREATED POLYESTER CARTRIDGE (AQE2000)
                        
                                                                
                            2 PER UNIT #41212
                        
                                    
                    
                                                    $1,117.600
                                            
                
            
                                    
                            HO TREATED POLYESTER CARTRIDGE
                        
                                                                
                             (AQE2000) (UPGRADE PRICE PER CARTRIDGE) #41212-UPGRADE
                        
                                    
                    
                                                    $1,117.600
                                            
                
            
                                    
                            HO TREATED POLYESTER CARTRIDGE
                        
                                                                
                            UPGRADE PRICE PER CARTRIDGE) #41213-UPGRADE
                        
                                    
                    
                                                    $1,411.200
                                            
                
            
                                    
                            DACRON MEDIA PREFILTER 1"
                        
                                                                
                             #41215
                        
                                    
                    
                                                    $25.600
                                            
                
            
                                    
                            MERV 14 POLYPROPYLENE ESF FILTER
                        
                                                                
                            24IN X 24IN X 12IN #41218
                        
                                    
                    
                                                    $635.200
                                            
                
            
                                    
                            MERV13 (80-85%) POLYPROPYLENE ESF FILTER
                        
                                                                
                            24" X 24" X 12" #41219
                        
                                    
                    
                                                    $620.800
                                            
                
            
                                    
                            MERV11 (60-65%) POLYPROPYLENE ESF FILTER
                        
                                                                
                            24" X 24" X 12" #41223
                        
                                    
                    
                                                    $467.200