This deep wall extension kit is compatible with Gerber D5602 series 3/4" thermostatic shower trim kits in the Mid-Town, Opulence, Parma, and Sirius collections with 3/4" thermostatic valve (D155000BT). Designed to accommodate an additional 13/16” of finished wall depth, the kit includes an all-metal long stem extension, long sleeve, and sleeve removal tool for durability and fast installation. This extension kit is for use when the distance between the back of the valve body and the front of the finished wall is greater than 4 1/4" from the finished wall surface
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