Insulated and non-insulated garage doors are the two main types of garage doors available on the market.

Insulated garage doors are designed with insulation materials, such as polyurethane or polystyrene, that are placed between the door panels to keep the temperature inside the garage more consistent. 

They help to keep the garage warm in the winter and cool in the summer, which can result in energy savings and increased comfort. 

Insulated garage doors are also typically quieter than non-insulated doors.

Non-insulated garage doors, on the other hand, do not have insulation materials between the door panels. 

They are typically less expensive than insulated doors and they are a good option for garages that are not used as living spaces or that are not connected to the main living area of the house.

When considering between insulated or non-insulated garage door, it is important to consider the intended use of the garage, the climate you live in, and the budget. 

If you are looking for a garage door that will help to reduce energy costs and improve the comfort of your garage, an insulated door is a better option. 

If cost is the main concern, a non-insulated door may be a better choice.