https://community.graphisoft.com/t5/Libraries-objects/Combustion-Air-Door/m-p/200817#M13334 <DIV class="actalk-migrated-content"><T>Hello all,<BR /> <BR /> California Plumbing Code Section 507.3 (1 and 2) requires openings in doors at 12" from top/bottom and a minimum of 100 square inches in area.<BR /> <BR /> How can I build, model, such a door?<BR /> <BR /> Thanks.</T></DIV> Wed, 24 May 2023 08:51:29 GMT Anonymous 2023-05-24T08:51:29Z https://community.graphisoft.com/t5/Libraries-objects/Combustion-Air-Door/m-p/200817#M13334 <DIV class="actalk-migrated-content"><T>Hello all,<BR /> <BR /> California Plumbing Code Section 507.3 (1 and 2) requires openings in doors at 12" from top/bottom and a minimum of 100 square inches in area.<BR /> <BR /> How can I build, model, such a door?<BR /> <BR /> Thanks.</T></DIV> Wed, 24 May 2023 08:51:29 GMT https://community.graphisoft.com/t5/Libraries-objects/Combustion-Air-Door/m-p/200817#M13334 Anonymous 2023-05-24T08:51:29Z