This bracket is designed for standard manual awnings with a 40mm torsion bar, which makes it ideal for balconies. They can be installed under and on an existing overhang such as an eave. The number of brackets required depends on the width of the awning. 1.5m - 3.0m standard manual awnings: Need 2 x ceiling wall brackets 3.5m - 4.0m standard manual awnings: Need 3 x ceiling wall brackets 4.5m - 5.0m standard manual awnings: Need 4 x ceiling wall brackets Primrose Awnings Set Of Ceiling Wall Brackets For 40mm Torsion Bar - For Standard Manual, XL Awnings in White Size: 2 Pack