Check out their credibility with an organization

The shutters louvers should be smooth and stay in the desired position throughout the lifetime of the shutter. Some manufacturers feature “tension screws” on the side of each shutter panel, with one tension screw required for each louver section. The problem with tension screws occurs over time, when tightening the screws becomes necessary on a regular basis. Eventually, the Wholesale Carbon Steel Screws louvers within a single shutter unit will not have uniform tension because the louver sections adapt to the tension screw differently. Polywood, vinyl, fauxwood, and synthetic shutters usually have an extremely tight louver tension. It is then difficult to put the louvers exactly in the desired location, and the rotation of the louvers is difficult. The best technique for providing uniform tension that will remain constant is a split nylon pin tension system that requires no maintenance.

Wood is the most preferable material for building shutters, and not all woods are made alike. Basswood is a superior wood because it is among the straightest of hardwoods with a fine uniform texture and indistinct grain. It can be sanded and stained to a smooth finish, and it is lightweight yet very strong.

You should research the company from which you plan to purchase your shutters. They need to be a reputable, knowledgeable, support oriented, and accessible. We recommend you test their knowledge by asking questions. Check out their credibility with an organization such as the Better Business Bureau, and check to see if they have a list of customer comments or references. The company needs to be prepared to communicate all of the necessary information to you about purchasing interior shutters. They need to have a staff that is experienced and available for technical questions. It is frustrating when the only knowledgeable person is always "in the field."

Mortised hinges are important to achieve a tight fit within your window opening. Without a mortised panel, a gap appears on the hanging side that allows light to break between the shutter panel and the window jamb. It should not be necessary to mortise the window jamb.