By Pentair Pool Products



Model # 144284

Alternate Part #'s PEN144284

Availability Please allow 3 - 4 weeks for delivery - Please allow 3 - 4 weeks for delivery

Product Description

The THS Filter is an NSF-approved 50 psi rated tank with flow rates up to 535 gallons per minute. The filter shell is manufactured from a unique and lasting composite laminate design that makes winding unnecessary. Paracote ® , a waterbased, environmentallyfriendly coating, provides remarkable surface protection.


  • Five sizes to 27 sq. ft.
  • Manway in front for easy access and smaller footprint
  • Manway with viewport available as option
  • 6 in. flanged connections, 4 in. victaulic on the THS 3461
  • Optional manual, semi-automatic, and automatic backwash systems for one and two tank systems
  • Lateral V-slots for self-cleaning
  • Influent manifold distribution to prevent clogging
  • NSF approved from 5-20 gpm/sq. ft.



  • Construction:
    • Mult-layer engineered fiberglass crafted of chopped glass and directional roving in an isopthalic polyester matrix.
  • Operating Pressure:
    • Capable of withstanding 50 PSI internal pressure.

Tank Base:

  • Support Bases:
    • Tanks feature ABS saddle style support bases for filter body, capable of rotation for leveling purposes.


  • Headers:
    • One influent header is fitted with sufficient distributors to properly distribute incoming flow evenly across the sand bed surface. An additional effluent header is supplied with sufficient laterals equally distributed not less than 12 inches below the filtering sand bed.
    • Laterals are 2-3/8" x 10" with 2" NPT connections and constructed of ABS plastic with molded 'V'-groove slots.

Operation / Performance:

  • Flow Rate
    • NSF Listed for 5 to 20 GPM per square foot of filter area.
  • Maximum Limits
    • Working pressure 50 PSI max. Continuous Water temperature 125° F.
  • Sand Media
    • #20 white quartz silica sand. Effective size 0.45-0.55mm.
  • Safety provisions
    • Each tank features an automatic and manual air release system fabricated of non-corrosive materials.

Product              Description
156400               Single THS semi-automatic controller 6 in. FP
156450               Dual THS semi-automatic controller 6 in. FP
156800               Dual THS autobackwash controller
156850               Single THS autobackwash controller

Products           Description
140325              Adder kit for third THS Filter 2
156100              Temperature probe kit 4
156150              Flowmaster saddle kit 4
155700              Kit-THS3461, single tank manifold, with diaphragm valve kit
155702              THS single tank manifold kit with butterfly valves 3
155720              Dual 34 in. dia. 6 in. FP kit with diaphragm valves
155722              Kit-THS3461, single tank manifold, with butterfly valve kit 3
155701              Kit-THS3461, dual tank manifold, with diaphragm valve kit

Model                 Description
155703              Kit-THS3461, single tank manifold, with diaphragm valve kit
155721              THS dual 34 in. dia. 6 in. FP kit with diaphragm valves
155723              Kit-THS3461, dual tank manifold, with diaphragm valve kit
155730              THS dual 42 in. dia. 6 in FP Kit with diaphragm valves
155800              WA-KIT wedge anchor kit 1
155850              BVA-KIT 1/2 in. ball valve adapter kit for manual air relief 1
155705              Manway with Viewport upgrade
155706              Manway with Viewport Retrofit Kit

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Product Specifications

THS4284 - 144284
42 in. x 84 in.
Filtration Area:
23.2 sq. ft.
Flow Rating:
348 GPM
Sand Required:
3,000 lbs.
Turnover 8 Hrs.:
167,040 gal.
Turnover 10 Hrs.:
208,800 gal.

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