The PFA101 is a Hanging Mount Adapter from Dahua thats applicable model is sd32. Features: Material: Aluminum Mount Adapter Neat & Integrated design Specifications: Model DH-PFA101 General Material Aluminum Dimension (W x H x D) Φ159mm x 35mm Pipe Thread G1 1/2″ Operating Temperature -40ºC ~60ºC Humidity 0~90% RH Load Bearing N/A Weight 0.23kg Applicable Model Please see “Accessory Selection”