The vibration isolation curb shall be air and weather tight using an elastomeric seal, which is attached to the upper support frame with a galvanized steel clip. The seal shall extend down past the wood nailer of the lower support assembly and flash over the roof material at the wood nailer on the lower support curb.
NSMA stands for Navy Systems Management Activity (US DoD) Suggest new definition This definition appears very rarely and is found in the following Acronym Finder categories:
About MSC. This is an Official U.S. Navy Web site and is the official web site of the Military Sealift Command. For more information on employment with the Navy, visit Navy Jobs. MSC reports to the U.S. Transportation Command for defense transportation matters, to the U.S. Fleet Forces Command for Navy-unique matters and to the Assistant Secretary of the Navy for Research, Development and Acquisition for procurement policy and oversight matters.