DL - Drum Louver Diffuser
EL - External Louvre (Fixed -AL Profile)
LG - Louvre Grille (Fixed -AL Profile)
LG - Louvre Grille (Removable Double Margin)
LG - Louvre Grille (Removable Push & Sit Down -AL Profile)
LG - Louvre Grille (Round)
SD - Single Deflection Grilles (Fixed)
