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 $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 By Balboa 1" Slimline AC With Tear Drop, Part # 10-2330WHT $26.95 Add to Cart