Dimensions and Installation InformationFor answers to your Monogram,® GE Profile™ orGE® appliance questions, visit our website atge.com or call GE Answer Center ® service,800.626.2000. Dimension and installation information are shown in inches.Listed byUnderwritersLaboratoriesPGP989SNGE Profile™ 30" Downdraft Gas CooktopSpecification Revised 4/09230285Installing the Ductwork: Use galvanizedor aluminum duct in 6” round or 3-1/4” x10” size, or combination of both. PVC ductor locally approved piping should be usedif installing under a poured concrete slab.Local building code must be followed inspecifying type and schedule of all duct used.Note: Ductwork must be vented to outside.Do not vent into a wall, ceiling, crawlspace,attic or any concealed space. Always usean appropriate roof or wall cap with damper.Laundry-type wall caps should neverbe used. For maximum efficiency use theshortest and straightest duct run possible,with as few fittings as possible.For satisfactory performance the duct runshould not exceed 100 feet equivalent length.Refer to the table of equivalent lengths(shown in installation instructions) forvarious duct configurations.Rear Wall VentingDownward VentingVenting OptionsThrough Cabinet Toe Space Inside Wall to Roof Direct to OutsideBetween Floor Joist9-1/810-1/818-3/46-1/8