Way to call sublists from a list based on the number of items in a list?

Hello, I’m trying to parameterize the floor framing for a building with an atrium, but am having trouble removing the members that cut through the atrium. Right now, I am using slice to split curves where the atrium is located. In a list with all the beams, sublists containing 3 items cut through the atrium. I would list to call only the sublists that contain three items. Is this possible?

Can you post a screenshot?

You could you Count each sublist with List.Map, check if == to 3, and then select only those sublists

What Gui said