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 NWDC Mission. Products and Services. The NWDC Story. Over the years, Navy Warfare Development Command has evolved into an integral part of the Navy's warfighting development system, delivering and integrating new capability to the Fleet at the tactical and operational levels of war.