Product Type Venting For Gas Heaters Compatible with Product Type Unit Heaters Compatible Grainger Part Number 4DG06 to 4DG45 Compatible Mfr Model Number 4DG06 to 4DG45 Opening Width 5 in Opening Depth 5 in Mounting Type Surface Vent Direction Horizontal or Vertical Vent Diameter 5 in Vent Size 5 in Vent Type Intake/Vent Concentric Y Material Steel Outer Diameter 5 in Includes 5 in Vent Cap Flue Deflector Collar Sealant Vent Box Assembly Standards ETL