Square Ceiling Diffuser

SCD

Round Ceiling Diffuser

RCD

Egg Crate Grille

EGG

Linear Bar Grille

LBG

Return Air Grille

RAG

External Louver Grille

EXLG

Linear Slot Diffuser

LSD

Volume Control Damper

VCD

Round Volume Damper

RVD

Flexible Air Duct

FAD

Flexible Air Duct with Insulation

FADI

Aluminum Tape

AT