supported above a surface 17 adjacent the wall 12 on a pair of support arms 18 which will be further described below a case assembly 20 is mounted on the wall 12 at a desired height for the awning 14 a pair of rafter arms 22 are disposed between the wall 12 and the lead rail 16 to hold the awning in tension spacing the rafter arms maximum of about eight feet on either side of the center of the roller tube minimizes horizontal deflection of the lead rail referring to fig1 an awning rail 24 including a 34 c 34 channel is securely fastened to the wall 12 the case assembly 20 includes a pair of rail hooks 26 one disposed near each end of the case assembly the rail hook 26 includes a generally cylindrical rail 27 or ball received in the 34 c 34 channel the rail hook 26 is secured in place by one or more lag screws 30 alternatively the rail 27 may be omitted and additional lag screws or other fasteners may be used an upward projection 28 of each rail hook 26 supports a case bracket 32 an elongated case 34 is fastened near each of its ends to the case bracket 32 the case has a flange 33 fastened or pressed against the wall 12.