This small rear outlet gunite niche is designed to use with Zodiac Jandy pool and spa lighting system. Rear outlet in 1-inch with 1/2-inch and 3/4-inch reducers. Internal and external bonding grounding lugs for use with either metal or plastic conduit. Room for 4-feet of coiled cable. Plastic plaster shield for protection during construction. It measures 6.97-inch depth by 5.33-inch diameter. Made of stainless steel.