Perhaps use a SelectionSet of:
(cons 2 (strcat Item ",`*U*"))
Then, when iterating through the SelectionSet, test:
(if (eq Item (vla-get-EffectiveName (vlax-ename->vla-object <entity>)))
...
Oh BTW, quotes are not needed, use
(setq BrdrList (list "CLIENT2_8x11" "CLIENT2_22X34"))
or:
(setq BrdrList '("CLIENT2_8x11" "CLIENT2_22X34"))