Retaining Lug screws onto a compatible nail base, sandwiching the heater and dish in place.
5/16 Threading
The Stepped Lug is available in two sizes, to accommodate the different thicknesses of Halo Dish and Nimbus Dish (The Titanium HALO does NOT require this lug as the dish itself is threaded).
Channel Lug accomidates Channel Caps and reduced airflow noise.
To fit Long Lug to the HALO dish, a Quartz Heat Retainer is required.
