4x4 Piston door, 704b, 0.75s close/0.45s open

Build image: 
In-game name (NO VISITORS! Must be LEARNER rank or higher!): 
L3_Gains
Builder name(s) and current ranks: 
L3_Gains, Learner+
Creation location: 
2281 13 -2675
Machine Features: 

The door is my second attempt of its type, and alot better than my first. It is a 4x4 Piston Door that closes in 0.75s, and opens in only 0.45 of a second ! it is also survival friendly.

How To Use: 

Flick the lever.

Request status: 
Approved