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From our technical experts

Hayward Pro Hi Advanced Side Mount Sand Filter 21″


  • Diameter 500mm / 21″
  • Max. pool vol: 65
  • Easy to maintain
  • Hard wearing
  • Suitable for salt water


Hayward Pro Hi Advanced Side Mount Sand Filter 21″


Economical and reliable sand filters from Hayward.

  • Hard wearing: polyethylene-injected, heat-fusion welded filters
  • Suitable for salt water and traditional chemical water treatments
  • Filters particularly suitable for above-ground and small size pools (up to 65 m³)
  • Wide double drain: water only / water + media
  • Easy to maintain and use, thanks to its transparent polycarbonate screw-on cover
  • Circular base for good filter seating
  • Including 6-way valve
  • Warranty: Tank 5 years, Equipment 2 years



  • Diameter : 500 mm
  • Filter area : 0.19 m²
  • Max flow rate : 9.5 m³/h
  • Sand Required : 100 kg
  • Type : S210SIETL Pro Series Hi Advanced
  • Max. pool vol.: 65 m³
  • Max. temp.: 50 °C
  • Size : 1 1/2″
  • Connection : Female Thread
  • Material : HDPE
  • Max Pressure : 2 bar


Please note: Delivery time for this item is 4 weeks.

Free Delivery to UK Mainland Only. For delivery charges to all other areas please call or email giving your postcode.

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Returns Policy

Your rights to return goods are protected under the EU Distance Selling Directive.

You are entitled to cancel your order and return the goods within 7 working days for a full refund not including the cost of delivery. Do this by contacting us by email or telephone and quoting the order number supplied to you. Your refund will be paid within 30 days. You are responsible for the cost and risk of loss or damage when returning the goods, so you should take out enough postal insurance to cover their value. This cancellation policy does not affect your rights when we are at fault - for example, if goods are faulty or incorrectly-described.

Exclusions: Bespoke items (made to measure items) are not included and cannot be returned. If a bespoke item is faulty then the product warranty /guarantee will take effect.

Any goods returned should be in saleable condition.

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None of these terms affect your legal rights and these are not diminished in any way. If any term is held to be invalid under any applicable statute or rule of law, that term is automatically omitted from the terms to minimum extent necessary to comply with the law and without affecting the validity or enforceability of the remainder.