on the lower channel flange 38 and the clip is then rotated to an upright condition where the edge 57 is vertical and close to or abuts the channel web 37 the locking tab 51 is then bent downwardly into the vertical plane of the clip body proper to lock the clip 50 onto the channel 36 a hole 55 creates a bend line at the base of the tab 51 to facilitate manual bending a lower part of the body of the clip 50 is slotted at 58 from opposite edges to form oppositely extending locking tabs 59 holes 61 are formed at the inner ends of the locking tabs to create bend lines in the remaining areas of the clip body between the holes 61 and end of the slots 58 a panel 42 is installed by positioning the inverted channel 44 of the panel on the hook 52 the panel 42 can be locked against unwanted removal from its installed position by bending the tabs 59 out of their original plane and over the adjacent areas of the inverted channel 44 in essentially the same manner as described in connection with the clip of fig1 the clip 50 is used in essentially the same way as that described in connection with the clip 10 in situations where there is limited deviation from a perpendicular relation between a panel edge 43 carrying the inverted channel 44 and the supporting channels 36 the horizontal width of the rectangular cutout 56 can be made somewhat oversize in relation to the width of the channel flanges 38 39 so as to allow the clip 50.