Are we talking charcoal canisters or electronic moniters. If cannisters, then 2 are required to be placed within 6" of each other. If an electronic moniter, only one- but I would place one in each unit.
Rick
Are we talking charcoal canisters or electronic moniters. If cannisters, then 2 are required to be placed within 6" of each other. If an electronic moniter, only one- but I would place one in each unit.
Rick