There are several types of awnings capable of effectively protecting your patio: 1. Standard awnings. The articulated arms and fabric remain exposed when the awning is closed. For these models, Somfy recommends you use the Sunilus io motorised system. 2. Cassette awnings. The articulated arms and fabric are protected from UV and moisture within a sealed cassette. 3. Semi-cassette awnings. Only the fabric is protected within the sealed cassette. For awnings with cassettes, Somfy recommends you use the Sunea io motorised system. 4. Awnings with a roll-up valance. Extra fabric is integrated into the outside bar holding the fabric. It provides protection when the sun is low in the sky. For this type of awning, Somfy recommends you use the Sunea Screen 40 io motorised system.