Pentair 12.5" Replacement Lid for Posi-Clear RP Cartridge Filter 150–200 Sq Ft | 178745Z

The Pentair 178745Z is a genuine 12.5-inch replacement lid designed specifically for the Posi-Clear RP® Cartridge Filter models ranging from 150 to 200 square feet. Engineered for a precise fit, this durable lid keeps the filtration system sealed and operating at peak efficiency, helping to maintain clean and clear pool water.

Key Features

Genuine Pentair OEM Part: Ensures exact compatibility and reliability
Durable Construction: Built with high-quality materials to withstand pressure and UV exposure
12.5-Inch Diameter: Sized to fit securely over Posi-Clear RP filters
Secure Seal: Helps prevent leaks and ensures consistent filtration performance
Tool-Free Installation: Designed for easy replacement with standard hand-tightening

Technical Specifications

Part Number: 178745Z
Compatible Models: Posi-Clear RP® Cartridge Filter 150 Sq Ft and 200 Sq Ft
Diameter: 12.5 inches
Color: Almond/Tan
Material: High-strength polymer

Maintain your pool’s filtration system with confidence using the Pentair 178745Z Replacement Lid. Designed for a snug, secure fit and dependable performance, it's the perfect solution for replacing a cracked, worn, or damaged lid on your Posi-Clear RP filter.

SKU: 178745Z

Questions about returns? View our return policy.

Hours Of Operation:

Monday - Friday: 7:00 am to 5:00 pm Phoenix Time

Saturday: 8:00 am to 2:00 pm

Sunday: Closed

We do not ship on Saturday or Sunday.
Orders totaling more than $300 will require signature confirmation upon delivery.
We process and prepare orders for shipment within 1 business day. Please note that many other pool supply retailers require 3–5 days of handling time before shipping.
Orders placed after 1:00 pm Phoenix Time may not be eligible for same-day shipment.
Expedited shipping options are available at checkout.

Return Policy:

Products that are received damaged will receive a refund in store credit.
Most products are eligible for return within 30 days of receipt, except where noted below.
To initiate a return, please complete an RMA form prior to sending your item back.
Original shipping costs are non-refundable and will be deducted from the return credit.
Items returned missing accessories or original packaging, or that are not in the same condition as received, may be subject to a restocking fee of up to 100% depending on the condition of the item upon return.
Some returns will be charged an automatic 15% restocking fee.
We are unable to issue refunds for items that have been damaged or rendered inoperable due to installer error.
Please complete the return form to receive your RMA number and return shipping label.
Chemical products are not eligible for return under any circumstances.
The Pentair Colorsync 618031 is not eligible for return.
Pool cleaners are not eligible for return.
Opened seals and o-rings are not eligible for return.
Capacitors are not eligible for return.
Plastic popup tools are not eligible for return.
Automation components and circuit boards are not eligible for return.
If a light is returned due to a reported malfunction and is found to be fully operational upon testing, return shipping costs and a restocking fee will be deducted from the refund.
Orders refused at the time of delivery will be subject to the original shipping costs being deducted from the refund.

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