Easily assembled and designed so that it can be modified for custom applications. Kit includes construction plans and directions along with installation hints for the popular Vans RV series of homebuilt aircraft. Controlled by ratchet type control cable such as ACS model A740. Order control cable separately.
Made in USA
Instructions not great, but if you have some fabricating experience youll make do. One issue that shouldve been a duh is that the rivets supplied are all flush, which is fine, but the supplied nutplates are not countersunk to accept the dimple that needs to be accomplished for a flush mounting surface. Can get by in a pinch with some modified dimple die and a squeezer. I decided to shift the collar upward such that the actuating flap was allowed a greater travel for more airflow. Then I laid a fillet of high temp silicone against the gap created by the shift. An improvement to the design/kit would be to have the actuating arm mounted on the forward side of the flap so that a second collar assembly could be mounted inside the cabin to distribute airflow as desired. All-in-all, not a bad solution for a budget. Can be modified to your purposes easily.
Per the manufacturer: This is made of aluminum. This product comes with a flat door that is controlled by an actuator that is hinged together.