This can handle a lock of any weight up to ten pounds. Due to the Cosmic Enhancement, locks that have been latched this way cannot be opened by anything other than their proper key or a Cosmic lock opening effect.

However, the lock or the door the lock is mounted in can still be destroyed.

Control (Locks, Occasional) 1 [14] 
    Cosmic [+50%] 
        Lock cannot be picked 
    Ranged [+40%] 
    Based on Activation Roll [+5%] 
    Locking Only [-50%] 
    Reduced Duration (x1/60) [-35%] 
    Magical [-10%] 
    Spell Components [-10%] 
        Must say "lock" in Latin 
Level 2 [27] 
    Increase Control by 1 level [+15 base] 
Levels 3+ [+13.5/level] 
    Increase Control by 1 level [+15 base]