There are three kinds of filter screens to provide ,the measure are below, the sample please look at the picture . if this photo is not clearly for you, we can provide another one . or you can see the the video of the filter screens in my website . YOU ARE welcome
1 down OUTSIDE dia. 50.2 :H:100

UP OUTSIDE dia. 66.8,

UP INNER dia. :48.5

screw's hole distance :58.6

2 down OUTSIDE dia.:33.3, H :83

UP OUTSIDE dia. : 51.3

UP INNER dia. : 38.3

3 down OUTSIDE dia. :30, H: 73

UP OUTSIDE dia.: 34.5

UP INNER dia.: 25.5
If you have drawings or samples , we can do it as your require,thanks