- Viking door bell button panel - Permits user to install a simple door bell today and allow for an easy upgrade to a viking E-40 door phone - Fits any standard single gang box - Offered in two colors off-white and dark brown - Panels are made from unbreakable plastic - Weather resistant gasket included - Screw terminals on button for easy wiring - Use with the Viking VE-3x5 enclosure for surface mounting - Promotional card for future sales - VKDB40BN