nVent Schroff, BASE/PLINTH CLOSED 300W 7021, Varistar SHX 30 Base Plinth, Base plinth for Varistart SHX 30 Rack., Base plinth for Varistar SHX 30 air/water heat exchanger rack, Base plinth for 300 mm wide frame (air/water heat exchanger), Base is bolted to the frame at front and rear; please order side trims separately