Section 4-204.12 - Equipment Openings, Closures and Deflectors(A) A cover or lid for EQUIPMENT shall overlap the opening and be sloped to drain.(B) An opening located within the top of a unit of EQUIPMENT that is designed for use with a cover or lid shall be flanged upward at least 5 millimeters (two-tenths of an inch). (C) Except as specified under ¶ (D) of this section, fixed piping, TEMPERATURE MEASURING DEVICES, rotary shafts, and other parts extending into EQUIPMENT shall be provided with a watertight joint at the point where the item enters the EQUIPMENT.(D) If a watertight joint is not provided: (1) The piping, TEMPERATURE MEASURING DEVICES, rotary shafts, and other parts extending through the openings shall be equipped with an apron designed to deflect condensation, drips, and dust from openings into the FOOD; and(2) The opening shall be flanged as specified under ¶ (B) of this section.Wis. Admin. Code Department of Health Services § 4-204.12