Long story short, SE's Oxygen mechanic uses mounting points to determine oxygen flow through a block. If that block has a solid cube of mounting points (like a light armor block), then it is opaque to airflow. I'm just asking that you revisit this aspect of these items. I adore your pipes since they let me use conveyors in already confined spaces.

I also really like your industrial doors (<3 <3 <3), but they seem to behave strangely with regard to air (especially the Offset one; standing in the cube with the door closed says that it's opaque and you suffocate without a helmet there.)

It's not high priority; I engineer around problems like this. It'd just be snazzy to not have to.

o7