Home » Octomarine Products » Filters » Sea Recovery/ HRO MK3 Pre-Filter Sea Recovery/ HRO MK3 Pre-Filter Mk3 Sea Recovery and HRO water Maker Pre-filter. As Agents of both HRO and Sea Recovery we are able to offer these filters at list price. DetailsSpecifications Mk 3 Sea recovery and HRO 5 Micron Pre-filter, The housing for this filter is white with a Grey collar and lid. Octo Marine Code SRC305 Brand Codes 801133257 Manufacturer Octo Marine Compatible Octo Marine, FCI, HRO, Sea Recovery Micron Sizes 5 Sizes 13 1/2″ x 5 1/8″, 2 1/8″ I/O (342mmx131, 55mm I/O) Options No Product Uses No Contact Us About this Product Similar Products Sea Recovery/ HRO MK3 Pre-FilterFilters, Particle, Pleated Sea Recovery / HRO MK1 Pre-FilterFilters, Particle, Pleated 9 3/4″ X 2 1/2″ Pleated FilterFilters, Particle, Pleated 20″ X 4 1/2″ Pleated Particle FilterFilters, Particle, Pleated 20″ X 2 1/2″ Pleated Particle FilterFilters, Particle, Pleated 10″ X 4 1/2″ Pleated Particle FilterFilters, Particle, Pleated Product Your Name Email Address Phone Comments 14 + 2 = SEND