to one another preferably the first substantially planar member 6 is attached to the first attachment surface 201 of the first elongated structural member 50 by at least one fastener 4 between the first end 7 and the fold region 8 and the second substantially planar member 6 is attached to the third attachment surface 301 of the second elongated structural member 50 by at least one fastener 4 between the second end 7 and the fold region 8 the connector 5 is preferably factory formed with the fold region 8 bent at a 45 degree angle the fold region 8 can be field bent to other angles with the caveat that it should be field bent only once preferably the first panel member 9 is disposed near the first end 7 of the first substantially planar member 6 the first panel member 9 preferably has a first distal end 10 and a first inboard end 11 the first inboard end 11 adjoining the first substantially planar member 6 at a first angular juncture 12 preferably the second panel member 9 is disposed near the second end 7 the second panel member 9 having a second distal end 10 and a second inboard end 11 the second inboard end.