The actuator is very powerful but the brackets are too flimsy for the size of the 6000n actuator. The brackets broke under pressure. Other than that this is one powerful product.
This is a 6" actuator, the compound lever is to increase the throw to 18 ". It has the power, is quiet and a good application for my duck door. It could be a little faster but then you sacrifice power. So far a good product for the money
I set two of these up to lift the roof of my green house. They stay in sync well so far and lift the roof with no issues. The built in limit switches make it real easy to install. Just provide power to the wires and they will extend to their limit and stop.