Kafka is a leading manufacturer of “UL” labeled dumbwaiter hoistway doors for the past 40+ years. All doors bear the “UL” B label for masonry or drywall construction and meet ASME A17.1. Our doors look great anywhere, from the finest of homes to the most demanding commercial setting. Complete approval drawings are created for each job to ensure a successful installation. Why not let us quote your next job requiring dumbwaiter doors?