All Aluminum Surface Mounted       SA: Single Wing, Floors         DA: Dual Wing, Floors         FA: Single Wing, Hinged, Floors         DT: Cover Plate, Floors         RA: Overlapping Plates, Floors         SW: Cover Plate, Floor to Wall         PD: Heavy Duty, Hinged, Floors         PDW: Heavy Duty, Hinged, Floor to Wall         BWF: Drywall Cover Plate         Thermal       TM: Floor to Floor         TC: Walls or Ceiling/Flat         Seismic       NB: No Bump System         Exterior       SAN: Compression Seal         EW: Exterior Seismic, Walls         RJ: Aluminum, Roof to Roof   Description Sizes Options Technical Specs CSI Specs CAD Drawings Competition Comparisons Nystrom DA Series is a double-wing expansion joint designed for level and raised floors. The DA Series requires a minimal amount of surface preparation, resulting in reduced installation costs compared to those of most "blocked out" alternative models. It is compatible with many floor coverings including carpet and VCT. The DA Series minimizes the need for patching and filling. It is ideal for both new and retrofit applications. Recommended areas for usage include airports, hospitals, hotels, schools, and retrofit applications.   D:\Sites\LocalUser\nystrom\content\0002.htm      © 2005 Nystrom