The SpotDiffuser model PK and PK-E are excellent for spot heating and cooling remote areas. Kitchens, factories, theaters, indoor sports facilities, airport terminals or any place where you need to move conditioned air from an inaccessible place to the work environment is easily handled by the PK and PK-E SpotDiffusers. Engineered to exacting standards and stylish in design, the PK and PK-E are the perfect choices for many new and retrofit building construction.