From shalab; a spacer or raised interval, i.e. The stile in a frame or panel -- ledge.
see HEBREW shalab
H7948. shelabbim
שְׁלַבִּים noun [masculine] plural joinings of bases (ᵑ9 juncturae); — הַשׁ ׳בֵּין 1 Kings 7:28-29, ׳עַלהַֿשְּׁ 7:29; AV RV ledges, ribs (Kit) or frames (Benz), joining or binding the parts together.
שׁלג (√ of following, unless loan-word; Late Hebrew = Biblical Hebrew, Ecclus 43:17c שלגו his snow; Arabic . Aramaic תַּלְגָא, , Assyrian šalgu).