The Von Duprin 33A-NL-OP-US26D-3 series of Exit Device for all types of single and double doors with mullion is well constructed from heavy gauge rolled steel section with the proven heavy duty touch bar mechanism that has been used so successfully in all architectural grade Von Duprin touch bar devices. The 33A Rim panic exit device is the economical alternative, incorporating a modern touchbar styling and the hardware is UL listed for panic exit hardware. It is specifically designed for use in areas where frequent abusive treatment can be expected.