Vintage Air has introduced their ultra-sleek fittings to complete your air upgrade.
Most at-home builders paint their firewalls black, making these black anodized bulkheads an easy choice to complete the look.
I personally use all black fittings in my car, and a set of black bulkheads for an air conditioning unit would fit right in.
Vintage Air's A/C bulkheads come in four configurations to fit your project.