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Sub-Zero Classic Series (BI) Wrapped Stainless Steel Insulation Plug

Topics:

  • Why is there a black plug, cap or disk at the bottom of a stainless steel wrapped door or drawer on a Classic series (BI) refrigeration unit?
  • Should a black plug, cap, or disk be visible on a stainless steel wrapped door or drawer?
  • How does insulation get applied to a stainless steel wrapped door or drawer?

Answer:

Insulation is sprayed into a stainless steel wrapped door or drawer during the manufacturing process. The injection port is capped off with a black circular cap.

  • The cap is found in the middle of the bottom edge of the door or drawer, this is normal.
  • It is possible to feel this cap by running your hand along the bottom edge of the door or drawer.
  • It is possible to see this cap along the bottom edge of the door or drawer, this is normal; however, one would likely have to lay on the floor, remove the door or drawer, or tip the unit in order to clearly see this cap.

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