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By Waterway

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Part # 4741-18

Manufacturer Code 550-7220

Alternate Part #'s 5507220, 14-270-1042, WW5507220B

Product Description

Grid Pack, Waterway Clearwater, 67 gpm, 18" x 6-3/4", qty 7

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?     Asked on 5/14/2015by Claude

Just to confirm that part number555-7220 for the proline DE filter includes all 7 grids? Thank you
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A  Answered on 5/14/2015 by InyoPools Product Specialist Patrick P.

Hi Claude, Yes this would be for all 7 grids.
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?     Asked on 6/8/2015by Kelly

How often should the grids be replaced & how can I tell if they need replacing? Our grids keep clogging and I was told it may be because they are worn. Is this true? Thanks! Kelly
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A  Answered on 6/8/2015 by InyoPools Product Specialist Wes B.

Hi Kelly, On average you will want to replace your Grids every 4-6 years. You will want to backwash weekly as well as take them out once a year and clean them. You can tell if there going bad if you get DE powder in your pool as well as after you clean them and backwash the filter and the pressure goes above 20-25 psi.
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