1105 is attached with connection device 1101 as seen in fig1 the connection device 1101 includes extensions 115 and 1120 that are received in the ends of the tubular support members fig1 depicts yet another embodiment of a support member wherein the upright support member 1301 is attached to the lower member 1302 with a flexible bellows connector 1315 that allows the members to be positioned to one another at variable angles as discussed above and now referring to fig1 in an embodiment of the invention a port 1405 is adapted to receive the end 107 of a conventional garden hose 1410 a vent 1420 allows air to escape from chamber 1401 during the filling operation and when the chamber has been filled will vent excess water fig1 depicts a plug that can be inserted into port which seals the opening including the vent now referred to fig1 an exemplary system is depicted wherein a plurality of devices 1601 and 1602 are attached to one another at the lateral sides and then positioned against a door 1650 of a structure 1655 to protect the structure from flood damage the devices can be secured in place by mechanically affixing the devices to the structures that are intended to be protected for example the user can nail or staple through the flap region adjacent to the upright portion of the chamber to secure the device in addition the support members can be provided with weights to help secure the devices in place for example a hollow support member may can be filed with rebar or alternatively the support member can be made.