

Connecting the profile parts is easy. Press the corner connector into a profile part until the straight surfaces of the profile and the corner connector are closely aligned. Then you perform the same action with the next profile part.
If the connection is not completely successful, do not use hard tools to achieve your goal. A small rubber mallet is sufficient for a good closure. Perhaps unnecessary it is important to make sure that the correct lengths are connected. Continue in this manner until a U-shape is formed.
You can now place the two remaining push-in corner connectors in the remaining profile at the same time and then connect them to the existing U-shape so that a sturdy frame is created.
The "flat" surface of the molded plastic insert corner has a unique combination of curves to create a slightly concave surface on the bonding surface. This minimizes the risk of the sharp angle of a miter frame causing a bump on the front of the panel when bent.