hold-for-field-measure piece: do not release it from assumed dimensions receiving, staging & shop-to-field flow hold for field measure hffm duct piece shop release assumed dimension verify opening equipment curb wall treat a hold-for-field-measure piece as intentionally incomplete until the actual installed conditions and current references are verified and released through the project process. this transition is tagged hold-for-field-measure. the equipment and curb are set, and i measured from the approved control line-can we review the release dimensions before they go to the shop?