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:
The Navy System Commands. SYSCOMs. The Navy's mission and resources transcend the boundaries of the sea, as it also includes advanced land based and aviation based missions. In order to address this diverse set of needs, the Navy is comprised of components known as System Commands, or SYSCOMs. Examples of Navy SYSCOMs include: Naval Air Systems Command (NAVAIR), Naval Sea Systems Command (NAVSEA), Space and Naval Warfare Systems Command (SPAWAR), and Office of Naval Research (ONR).