• 90 Mounting Ring
  The #90 Mounting Ring will allow the CS25 series only, to be mounted to a flat surface (see FIGURE 1). The mounting ring would be attached to a flat surface using the four .120 inch diameter holes. The shutter would then attach to the ring via the #3 housing rear thread (1.625 inch x 40TPI).
• 100 Mounting Ring
  The #100 (formerly 6-0100) mounting ring is a mounting flange which will allow all shutter types LS or VS series (except CS45 series) to be mounted to a flat surface (see Figure 1). The mounting ring would be attached to a flat surface and the shutter would then attach to the ring via the #2 housing rear thread (1.625in x 40TPI).
• 101 Mounting Ring
  The #101 mounting ring is a mounting flange which will allow the CS45 series, to be mounted to a flat surface (see Figure 2). The mounting ring would be attached to a flat surface and the shutter would then attach to the ring via the #2 housing rear thread (2.000in x 40TPI).
• 102 Mounting Ring
  The #102 Mounting Ring will allow the CS65 series to be mounted to a flat surface. The mounting ring would be attached to a flat surface using the four .120 inch diameter holes. The shutter would then attach to the ring via the #2 housing rear thread (3.00 inch x 40TPI).
  
• 103 Mounting Ring
  The #103 Mounting Ring will allow the CS90 series only, to be mounted to a flat surface. The mounting ring would be attached to a flat surface using the four .120 inch diameter holes. The shutter would then attach to the ring via the CS90 #3 housing rear thread (4.00 inch x 40TPI).