12-Inch Units

A12in-square-end-regular B12in-regular-with-sash C12in-half-with-sash D12in-restricted-open-btm-lintel E12in-solid-btm-lintel F12in-single-score G12in-single-bullnose H12in-dbn-one-end I12in-dbn-one-side J12in-pilaster K12in-offset-return-corner L12in-pilaster-16 M12in-conduit-deep-lintel N12in-half-high O12in-hh-res-open-btm-lintel P12in-hh-solid-btm-lintel Q12in-split-face R12in-sf-single-flute U12in-sf-open-solid-btm-lintel V12in-sf-half-high