and or the ends of the tethers so that the shutter may be quickly installed before a storm referring to fig6 7 an alternative embodiment of an inflatable shutter 30 is shown in which each fastener 32 comprises a tether 34 a receiving member 37 an attachment member 38 and preferably a pressure relief section 39 the main difference between this embodiment and the embodiment of fig5 is that in this embodiment tether 34 and pressure relief section 39 connect attachment member 38 to the rest of shutter 30 rather than attachment member 38 being directly attached the addition of tether 34 and pressure relief section 39 provide added support to shutter 30 to allow it to withstand increased amounts of wind pressure like the embodiment of fig5 receiving member 37 is mounted on building structure 11 and cooperates with attachment member 38 to secure inflatable shutter 30 to the building tethers 34 can be made of any suitable material strong enough to hold the shutter in place during periods of high velocity winds in one embodiment tethers 34 are cords made out of polypropylene fibers tethers 34 should be flexible but at the same time should be stiff enough that shutter 30 resists separation from building structure 11 as it receives high velocity winds and windborne debris during a storm pressure relief section 39 links tether 34 to attachment member 38 in one embodiment pressure relief section 39 is an elastic cord composed of one or more elastic strands forming a core which are covered in a woven sheath of nylon or cotton the elasticity of pressure relief section 39 allows it to absorb negative pressure during inflation of air bladders 36 without transferring direct pressure to attachment member 38 as inflatable.