Overview Reviews Product Description Belimo ZIP Economizer™ Differential Enthalpy with DCV Capability and LF Spring Return Actuator (35 in-lbs) Product Videos Custom Field Product Reviews (No reviews yet) Write a Review Write a Review × Belimo Belimo ECON-ZIP-DELF Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name *Email *Review Subject *Comments