What is .LTL file extension?
Data file used by DIALux, a program that enables you to model and plan lighting for indoor and outdoor environments; contains data about a light fixture's power consumption, luminous flux, light intensity, light radius, and more; referenced by DIALux to model the light fixture's capabilities.
To open a LTL file in DIALux, select File ? Import ? Luminaire files..., navigate to your file, and click Open.
NOTE: Similar to other Luminaire data files such as .LDT, .ELD, .CIB, and .IES files.
You can see a list of software programs here on easyfileopener.org that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.