Grip-Gard Brite White HF Primer is an easy to use waterborne primer that provides a high build at an extremely low VOC level.
Designed with the intention of providing a one step process for use on the inside of channel letters and sign cabinets, this primer provides the type of high reflectance needed to really make your signs shine bright. 

This primer can also be used for the outside of your letters and cabinets as well, eliminating the need for two separate products for the same job. Brite White HF is a ready to spray primer approved for use on aluminum, steel and urethane foam products and also bonds well to most existing paint finishes.