conical — low ross
EIA 4″1/2 — EIA 3″1/8
panel mount — square flange
1-5/8″ with 4 7/8″ outputs
EIA 3″1/8 — EIA 1″5/8
EIA 3″1/8 — EIA 7/8”
EIA 3″1/8 — EIA 6″1/8