Oxygen/Airtight List

The list below contains all the of the large blocks since only large grids currently are the only ones capable of being pressurized. Under each block will be either green (airtight) or red (not airtight). By default, all blocks that haven't been constructed won't be airtight.

Some blocks placed outside of a room may not seal a room, windows are commonly found to have problems in this area. If placed on the outside, it isn't considered a seal since the frames aren't directly connected to the neighboring blocks. There are also a few instances of blocks sealing a room while visually it shouldn't be. Corner type blocks are sometimes found to have these problems.

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	Green - All blocks under this designation are capable of being airtight (pressurized). Some blocks may require certain orientation to allow for a seal. Others blocks (such as windows) may require other blocks to seal. However, the block itself is airtight.
	Red - All blocks under this category cannot seal a room, no matter the orientation. Some may appear to fill an entire block space, but they will not seal the room.

Advanced Rotor	Air Vent	Airtight Hanger Door	Antenna	Arc Furnace	Artificial Mass	Assembler	Battery	Beacon	Blast Door	Blast Door Corner	Blast Door Edge
Blast Door Inverted	Button Panel	Camera	Cockpit	Collector	Connector	Control Panel	Control Station	Conveyor	Conveyor Sorter	Conveyor Tube	Cryo Chamber
Curved Conveyor Tube	Decoy	Diagonal Window	Door	Drill	Efficiency Upgrade	Flight Seat	Full Cover Wall	Gatling Turret	Gravity Generator	Grinder	Half Cover Wall
Heavy Angled Armor Corner	Heavy Angled Armor Slope	Heavy Armor Block	Heavy Armor Corner	Heavy Armor Inverted Corner	Heavy Armor Slope	Heavy Corner 2x1x1 Base	Heavy Corner 2x1x1 Base Smooth	Heavy Corner 2x1x1 Tip	Heavy Corner 2x1x1 Tip Smooth	Heavy Inv Corner 2x1x1 Base	Heavy Inv Corner 2x1x1 Base Smooth
Heavy Inv Corner 2x1x1 Tip	Heavy Inv Corner 2x1x1 Tip Smooth	Heavy Round Armor Corner	Heavy Round Armor Inv Corner	Heavy Round Armor Slope	Heavy Rounded Armor Corner	Heavy Rounded Armor Slope	Heavy Slope 2x1x1 Base	Heavy Slope 2x1x1 Base Smooth	Heavy Slope 2x1x1 Tip	Heavy Slope 2x1x1 Tip Smooth	Interior Light