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SPECTRUM PTL-CB Twist Lock Carbon Block Replacement Filter

SKU: PTL-CB
Sold out

Price:
Sale priceDhs. 157.63
Quantity: 1 Pack
Price:
Sale priceDhs. 157.63
Free express delivery for all orders over £50

Free express delivery for all orders over £50

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FREE Express Delivery: Orders over £50 to UK mainland
Next Day Delivery: £5.99 (order before 3pm)
Standard Delivery: £2.99 for 2-3 working days
Guaranteed to Fit

Guaranteed to Fit

Perfect fit guaranteed on all recommended products – or you’ll get a full refund.

Unsure if it’s the right fit? Ring us on 0161 768 9566 or email us.

Description

The SPECTRUM PTL-CB Twist Lock Carbon Block Replacement Filter replaces the carbon filters from your PTL-RO systems, offering outstanding performance with an ultra efficient 1-micron carbon block cartridge for effective contaminant and chlorine removal.

Compatible replacement for the Clearwater P6C1 Replacement Water Filter Cartridge.

Please note: The Spectrum PTL-CB is not compatible with the Harvey TwistLock filter.

Specifications

  • Technology: Twist Lock Carbon Block Cartridge
  • Material: Polypropylene/Coconut Activated Carbon
  • Performance: Chlorine, Taste & Odour
  • Micron: 1
  • Length: 10"
  • Diameter: 2.5"
  • Temperature Rating (°C): 38
  • Max Pressure (bar): 6.9
  • Flow Rate (lpm): 3.8

Shipping

  • Orders ship within 1 business day (Mon–Fri, excl. holidays).
  • You’ll get an email as soon as your order is on its way.

Delivery Options

  • FREE Express Delivery on UK orders over £50
  • Next Day Delivery – £5.99 (order before 3pm)
  • Standard Delivery – just £2.99

Click here for international details.

Every filter we stock meets rigorous industry standards. We source exclusively from manufacturers holding WRAS, NSF, or WQA certifications — so whether you're replacing a fridge filter, fitting an undersink system, or upgrading your whole house, you're getting proven performance, not guesswork.

Different water problems need different solutions. Hard water, chlorine taste, sediment, microplastics — each requires specific filtration technology. That's why we don't just sell filters; we help you match the right system to your actual water quality concerns.

What we guarantee:

  • Certified quality — Every product meets recognised UK or international filtration standards
  • Genuine parts — Authentic filters from authorised supply chains, never grey-market imitations
  • Expert guidance — Our team knows filtration inside out and will steer you to what actually works
Filter Flair
OEM Brands
Other Online Sellers
Perfect Filter Guarantee
✅ Always fits or your money back
✅ Fits (official product)
❌ Risk of wrong/ incompatible filter
Delivery Speed
✅ Next-day tracked delivery available
❌Often slower, limited stock
❌Unpredictable shipping times from abroad.
Customer Service
✅ UK-based, 7-Day Specialist Support
❌ Outsourced India-based centres
❌ Unskilled AI chatbot support
Price and Value
✅ Lower price, same OEM reliability
❌ Sticker price with no savings
❌ Unskilled AI chatbot support
Credibility
✅ 900+ Verified 5-star reviews
✅Big brand reputation
❌ Mixed reviews with doubts on authenticity

Fit & Compatibility

How do I know if this filter fits my fridge?
Use our “Compatibility Check” on the website. Enter your fridge’s model number and we’ll show you the exact filter you need.

Where can I find my fridge’s model number?

Most fridge model numbers are on a label inside the fridge (usually behind the crisper drawer, on the side wall, or near the door frame). See our guide here. If you can’t find it, check your user manual.

What if the filter doesn’t fit?


You’re covered by our Perfect Fit Guarantee. If it doesn’t fit, we’ll replace it or refund you, no hassle.

Can I use a non-OEM filter in my fridge?

Yes, Certified Compatible Filters are engineered to meet or exceed OEM standards, while offering the same fit and filtration performance—at a better value.

Usage & Maintenance

How often should I replace my filter?

Every 6 months, or sooner if your water has a noticeable taste or odour.

How do I install the filter?

Each filter comes with step-by-step instructions. Most simply twist or click into place—no tools required.

What happens if I forget to replace it on time?


Old filters can clog, slowing water flow and letting impurities through. Regular replacement ensures fresh, clean water and ice.

How do I know when my filter needs changing?


Look out for:

  • Water tasting or smelling off
  • Slower water flow
  • Your fridge’s “change filter” light switching on

Performance & Safety

Do these filters remove chlorine, lead, and microplastics?


Yes, our filters reduce chlorine, lead, and other common contaminants, including microplastics, so your water tastes better and is safer to drink.

Is water in the UK safe to drink without a filter?


Tap water in the UK is safe and regulated. A filter isn’t required—but it improves taste, reduces micro-contaminants, and gives extra peace of mind.

What’s the difference between OEM filters and Filter Flair alternatives?


OEM = “Original Equipment Manufacturer.” Filter Flair alternative filters deliver the same quality, compatibility, and certifications, but at a fraction of the price.

Are your filters certified (WRAS, NSF, WQA)?


Yes, all Filter Flair filters are independently tested and certified to meet WRAS, NSF, and WQA standards.

Delivery & Subscription

How quickly will my filter be delivered?


Orders are processed within 1 business day. Express UK delivery arrives in 2–3 days, and Next-Day delivery is available if you order before 3pm. For more information visit our shipping policy page

How does Subscribe & Save work?


Pick your filter, and get it delivered every six months while saving up to 10%. 

Can I pause or cancel my subscription anytime?


Yes, you’re in control, you can pause, change, or cancel anytime from your account dashboard.

How does international shipping work?


We ship worldwide. Costs and delivery times vary depending on the destination—calculated at checkout. See more information on our shipping policy page 

Trust & Assurance

Why choose Filter Flair over others?

  • Perfect Fit Guarantee
  • Genuine OEM & Certified Filters
  • Fast UK delivery
  • Subscribe & Save discounts
  • Excellent UK-based support, 7 days a week

What is the ‘Perfect Fit Guarantee’?


If your filter doesn’t fit or perform as promised, we’ll replace it or refund you in full. No risk, no hassle.

What if I need help choosing the right filter?


Use our simple Compatibility Checker or get in touch and we’ll help you find the perfect match for your fridge.

How can I get in touch with Filter Flair?


Get in touch via the ‘Contact Us’ page on our website or email our UK support team at support@filterflair.co.uk. Alternatively, give us a call on +44 (0)161 768 9566 or contact our live chat here.

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Customer Reviews

Based on 12 reviews
75%
(9)
8%
(1)
8%
(1)
8%
(1)
0%
(0)
B
Bryan Clifford (Bedford, GB)
Spectrum filters

Good product and price. Needs more internal packaging as both items were loose in box

Hi Bryan,

Thank you so much for your kind words and valuable feedback! We're truly glad to hear you’re happy with the product and price. We sincerely apologize for the packaging issue — your input is incredibly important to us, and we appreciate you bringing this to our attention. Please rest assured we’ll be reviewing our packaging process to ensure items are securely packed moving forward. Thank you again for helping us improve!

Best Regards,
Brian
Filter Flair UK

S
Sarah Roberts (Ruislip, GB)
First rate

My replacement canisters arrived promptly and are already in use. Great service.

Hi Sarah,

Thank you so much for taking the time to share this wonderful feedback! We're absolutely delighted to hear that your replacement canisters arrived promptly and that you're already putting them to good use.

It's truly our pleasure to be of help, and we're always happy to provide you with the quality products and service you deserve. Your satisfaction means everything to us, and knowing that we've met your expectations makes our day.

We genuinely appreciate your business and look forward to continuing to serve you in the future. Thank you again for choosing us!

Best Regards,
Brian
Filter Flair UK

K
Khurram Butt (Bridgwater, GB)
Khurram

Very good quality and very good service ✅💯👍

Hi Khurram,

Thank you so much for taking the time to leave a review for our SPECTRUM PTL-CB Twist Lock Carbon Block Replacements. We are thrilled to hear that you are happy with the quality of our product and our service. We always strive to provide the best for our customers.

Your kind words mean a lot to us and we are grateful for your support. Thank you again for choosing our product and we look forward to serving you in the future.

Best regards,
Brian
Filter Flair UK

S
Susan Ryall (Farnham, GB)
Performance to Perfection

A treat to receive service with a smile despite my having telephoned your warehouse manager in what must have been the middle of his night ! And delivery before date promised was a bonus. Many thanks.

Hi Susan,

Thank you so much for your kind and thoughtful words! We're truly delighted to hear that your experience with our team—from the late-night call to the early delivery—met your expectations. Our warehouse manager will be especially pleased to know his dedication made a difference.

We sincerely appreciate your support and trust in us, and we would be honored to serve you again in the future. Please don’t hesitate to reach out if there’s ever anything more we can do for you!

Best Regards,
Brian
Filter Flair UK

C
Christopher Drewery (Norwich, GB)
Easy ordering and prompt delivery

Item as described and quick delivery

Hi Christopher,

Thank you so much for taking the time to leave us a review.

We're thrilled to hear that you had an easy ordering experience and received your items promptly. We always strive to provide accurate descriptions and fast delivery, so we're glad we could meet your expectations.

Thank you again and please let us know if there's anything else we can assist you with. Have a great day!

Best Regards,
Brian
Filter Flair UK

Free UK delivery over £50

Just £2.99 for anything less.

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