Response to I have an old stainless steel de filter. I believe it is a Pentair. There are 8 full size grids that "plug in" the bottom of the filter. No partial grid. I think I've ordered 1224 in the past. The end that plugs in has 1 notch on the outside. Can you confirm from my pictures? Time to order an o-ring too. I've had a couple that the plug in end had 2 notches, but were too narrow to seat correctly.

An image is worth 1,000 words! Add an image or two to your comment to help ensure it is understood accurately.

Yes, please email me exclusive discounts, swimming pool tips and helpful how to guides. This comment may be posted on a public site. Do not include: HTML, references to other retailers, pricing, personal information, or any profane, inflammatory language.