Additional Options > System Upgrades and Parts

The ProLine™ Fluted Aluminum Knob with Set Screw is an attractive option for rotary controls.

NOTE: The knob must be reamed in order to fit Gen II controls.

Replacement 1950s Chevrolet-style control knob.

Molded 2-1/2 Inch to 3 Inch hose adapter.

Dimensions shown are from the outside of the part and may vary. When measuring your louver and looking for a hose adapter, also consider the thickness of the plastic, which can be approximately 0.08 +/- .030 thick.

The depth of the hose adapters are between 1/2" to 3/4".

Hose Adapter for 2" Hose, 2-33/64" Diameter x 1-1/16" depth

Dimensions shown are from the outside of the part and may vary. When measuring your louver and looking for a hose adapter, also consider the thickness of the plastic, which can be approximately 0.08 +/- .030 thick.

The depth of the hose adapters are between 1/2" to 3/4".

Molded 2-inch glue-on hose adapter.

For those custom installations where retaining the original defrost duct assembly makes sense, these glue on duct adapters are a great way to provide a convenient connection and interface with the 2” duct hose that is included with Vintage Air evaporator kits. Simply drill a 2” hole in the existing plenum, and secure the adapter with epoxy or a suitable adhesive.

2 required for proper interface with Vintage Air evaporator kits.

This 2-piece machined aluminum defrost duct trim set is designed specifically for use with our universal defrost ducts (633810-VUA).

Dimensions are 6.5-inches x 0.625-inches.

This universal defrost duct set for 2-inch duct hose features a pair of defrost ducts that measure 6.5-inches x 3.25 inches x 4.5-inches deep.

This compact universal defrost duct set for 2-inch duct hose features a pair of defrost ducts that measure 6.5-inches x 2.5 inches.

This injection molded universal defrost duct set for 2-inch duct hose offers dual mounting options and features integrated air diverters. Dimensions are 6.25-inches x 2.75 inches deep.

This universal defrost duct set for 2-inch duct hose features a pair of defrost ducts that measure 12.5-inches x 1.75 inches x 2.125-inches deep.

Molded Y-connector for 2-inch duct hoses.

Upgrade your rotary controls with accent bezels for a customized look. The bezel mounts directly beneath the control decal and features a machined finish with a 1.5-inch outside diameter and a 7/16-inch inner hole.