Watts Cast Iron Air Gap, For Use With: Series 909, 1/4 in to 1/2 in - 909 AGA Nominal Size-52" X 1.5" They mount to an exterior

They mount to an exterior wall of a building to provide access to water in outdoor areas of a building

Material: CAD-FL-PL Series is 16 gauge satin coat steel door and 16 gauge satin coat steel frame

18-gauge stainless steel and is 1-1/4 inches in diameter

Cross Reference: Carrier HC39GE236

Capable: 250 single or half-fold paper covers

Watts Cast Iron Air Gap, For Use With: Series 909, 1/4 in to 1/2 in - 909 AGA Nominal Size-52" X 1.5" They mount to an exteriorAir Gap; For Use With: Series 909, 1 4 in to 1 2 in; Size: 1 4 in to 1 2 in; Connection Type: NPT; Length: 3 1 8 in; Width: 2 3 8 in; Material of Construction: Cast Iron; Max. Pressure: 140 psi; Standards: USC