I've only experienced this at schools, but aren't the 70 and 90 degree source four frames larger than the regular 19-50? Not sure about the 14 degree size.
The newer XDLT lens tubes for the Lustr Series 3 use 7.5" gel frames for the entire 26-36-50-70 degree range. The 14 and 19 degree lens tubes take a 10" gel frame.
Of course, by this point in time, it's just diffusion, not gel, but it's going to take a while before "media holder" replaces "gel frame" in theater lingo.
Of course, by this point in time, it's just diffusion, not gel, but it's going to take a while before "media holder" replaces "gel frame" in theater lingo.