View cart “#3418 75mm duct coupling” has been added to your cart. View cart “#3410: 3″ Warm Air Duct (per foot)” has been added to your cart. #4411 Intake grille$44.00 #4411 Intake grille quantity Add to cart Description Description #4411 Intake grille, all metal construction Related products Add to cart #5430: Cold Air Inlet Vent $12.00 Add to cart #4416: 75mm/60mm reducer for 3413 $41.00 Add to cart #4401: 3.5″ Warm Air Duct Insulation (per foot) $7.00