Model SP-AP features virtually silent electronically commutated (EC) motors with adaptive technology to ensure they provide the air flow to meet whole-house ventilation code requirements and remove unhealthy air and moisture in real world installations. The fan includes three built-in, high-speed airflow settings (50, 80 or 110 cfm). Its standard two-speed operation helps comply with ASHRAE 62.2, WSEC, and CAL Title 24 requirements. Units come in lighted and non-lighted configurations with plug and play sensors (humidity, motion and CO₂) available.

CRD-300WT, a UL263 certified Ceiling Radiation Damper, is compatible with both the SP-AP0511W-1 and SP-AP0511WL-1 models.