Overview Reviews Similar Products Product Description Measures 2 5/8 Across Jet Face and 1 3/16 Across The Threads Outter Diamater Used in some Caldera Spas Bathtubs earlier models. 4-40-0042 10-3955WHT Location: SJR6B8 Product Videos Custom Field Product Reviews Find Similar Products by Category Recommended Quick view Balboa Hydro Air Slimeline ESC Assembly White - 10-3955WHT $12.99 Add to Cart Quick view HYDRO AIR SLIMELINE ASSYMBLY, 1" X 1" Part # 4-40-1504 $29.95 Add to Cart Quick view Hydro Air SLIMLINE JET FACE "POLISHED CHROME" Part # 4-40-0044 $26.42 $24.95 Add to Cart