5LB Apollo Top Fill Closed Loop Extractor Select Configuration:Professional It has two 4" ports

It has two 4" ports to facilitate installment to ventilation systems

resulting in higher energy efficiency and lesser heat output

and insert the new one for a quick and easy replacement

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5LB Apollo Top Fill Closed Loop Extractor Select Configuration:Professional It has two 4" ports***Note: Butane(Solvent) not included with systems unless ordered with dropdown menu or separately. Any order with butane WILL NOT SHIP EXPEDITED. DISCLAIMER: This unit is intended for LEGAL purposes only, to be used in accordance with local laws and ordinances. Use only in extremely well ventilated areas. Check with your local fire marshal for guidance when operating indoors 5LB Closed Loop Reclamation Extraction System (System comes with 1 yr.