Pentair Commercial Swimming Pool Equipment Pentair Amerlite Commercial Swimming Pool Niches Large stainless steel niches are formed with brass fittings. All niches have internal and external grounding lugs for use with either metal or PVC conduit. Select Model # 78210400 -- Amerlite Niche (Concrete/Gunite Wall) 3/4” Hub -- $60.41 78232400 -- Amerlite Niche (Fiberglass/Wood Wall) 3/4” Hub -- $128.88 78232500 -- Amerlite Niche (Fiberglass/Wood Wall) 1” Hub -- $124.32 78210600 -- Amerlite Niche (Concrete/Gunite Wall) 1” Hub -- $65.53 Quantity: