• 
  RM  Splash Resisted Louver
  Type Return Grille
• 
  RME  Low Wind Resisted
  Louver Type Return Grille
• 
  RML  Large Air Volume
  Louver Type Return Grille
• 
  RY  Light Reflection
  Type Return Grille

• 
  RJ  Curved Vane Louver
  Type Return Grille
• 
  RG  Eggcrate Type
  Return Grille
• 
  RF  Perforated Face
  Return Air Diffuser
• 
  RFB  Framed Perforated Face Return Air Diffuser

• 
  RFF  2 Feet Square Perforated
  Face Return Air Diffuser
• 
  RAX  Removable Type
  Linear Return Air Diffuser
• 
  RGX  Removable Type
  Eggcrate Return Air
  Diffuser
• 
  RJX  Removable Type
  Curved Vane Louver
  Return Air Diffuser
• 
  RMX  Removable Type
  Louver Return Air
  Diffuser
• 
  RKX  Removable Type
  Perforated Face Return Air
  Diffuser
• 
  PRX  Removable Type Net
  Face Return Air diffuser
• 
  RVX  Removable Single
  Deflection Return
  Grille & Register

• 
  GVX  Removable Double
  Deflection Return
  Grille & Register
• 
  RDF  Linear Filter Type
  Return Grille
• 
  CR-A  Round Louver
  Exhaust Air Vent
• 
  CR-S  Round Louver
  Exhaust Air Vent

• 
  CRL  Uncovered Round
  Louver Exhaust Air Vent
• 
  BF  Diffuser Ceiling
  Mounting Frame