Player > Spells > Blast Door
Starfinder Character Operations Manual p.133
Level Technomancer 3
School conjuration (creation)
Casting Time 1 round
Range close (25 ft. + 5 ft./2 levels)
Effect wall up to 20 feet high, 20 feet wide, and 5 feet thick
Duration 1 round/level (D)
Saving Throw none; Spell Resistance no
You conjure a blast door up to 5 feet thick that blocks a hallway
no more than 20 feet wide and 20 feet high. If the door would not
completely block the targeted hallway, you can't cast this spell.
Any creature in the spaces where the door appears is harmlessly
shunted to a side of the door you choose. The door's statistics are
those of a starship interior wall (Starfinder Core Rulebook 408).
It is airtight, and it protects against vacuum and radiation. When
the spell ends, the door vanishes without a trace.