Home Pentair SMBW4036 Fiberglass D.E. Filter | 35 Square Feet with Built-In Backwash Valve | 011554
NOTICE: The Texas weather emergency in February, in addition to the ongoing demand increase for pool products from the Covid pandemic, have caused industry-wide shortages on many products that most vendors expect to last late into 2021/early 2022. We're allowing items to be purchased so that customers who choose to wait will have their order shipped when product arrives. Many times there are long shipping delays on the few products we do have in stock. Please contact us to ask about availability. Live Chat and email are the best. Please keep trying back via chat and email as we can't answer them as fast as they come in but we are here, so keep trying! We're currently 20+ days behind on returning email (email is the best way to get a reply when all chat associates are busy). 

Pentair SMBW4036 Fiberglass D.E. Filter | 35 Square Feet with Built-In Backwash Valve | 011554

Pentair SMBW4036 Fiberglass D.E. Filter | 35 Square Feet with Built-In Backwash Valve | 011554 Pentair SMBW4036 Fiberglass D.E. Filter | 35 Square Feet with Built-In Backwash Valve | 011554
This item has been discontinued.

Parts AvailableParts Available
Platinum Preferred Manufacturer
  • Durable backwash valve is unaffected by heat and cold, ensuring flawless operation under all conditions.
  • Thermoplastic backwash rotor seal is specially engineered to prevent dirt from entering the rotor chamber for smoother, trouble-free operation.
  • Individually-removable grids for easy cleaning.
Recommended Replacement
Pentair SMBW4048 Fiberglass D.E. Filter | 47 Square Feet with Built-In Backwash Valve | 011555
Pentair SMBW4048 Fiberglass D.E. Filter | 47 Square Feet with Built-In Backwash Valve | 011555
  • Fiber Clear Cellulose Powder Filter Media | Replaces Diatomaceous Earth | 3 lbs. | FCR-048B
    Fiber Clear Powder Filter Media | Replaces D.E. | 3 lbs. | FCR-048B

  • Plasto Joint Stick Thread Sealant 1.25oz | 11775
    Plasto Joint Stick Thread Sealant 1.25oz | 11775

  • Schedule 80 Nipple PVC 2"x12" | 220-120-2
    Schedule 80 Nipple PVC 2"x12" | 220-120-2

Filtering with diatomaceous earth (D.E.) removes particles so small they are individually undetected by the human eye, but combine to decrease water clarity. 4000 Series filters remove the tiniest of contaminants, so your water truly sparkles. In addition to exceptional filtration, Pentair SMBW 4000 Series D.E. filters feature sheet molded fiberglass tanks and Noryl® rotary backwash valves for long life, dependable performance and easy maintenance.

Unique Spiro-Mite curved grid design ensures an even flow and uniform distribution of D.E. for optimum filtration efficiency and longer periods between cleanings.
Corrosion-resistant 20" diameter fiberglass filter tank is strong, durable and made to last for years.
Filters refined internal design minimizes flow restrictions so that the least amount of pumping power produces the maximum required flow rates"for lower utility costs.
Exclusive clamp ring design is safe, strong and reliable" permits quick and easy access to internal components.

Brand: Pentair
Square Foot
Grid Type
Q & A
Start typing your question and we'll check if it was already asked and answered. Learn More
No questions have been asked about this item. Be the first!
There are no reviews for this item. Write Review
Adobe Acrobat PDF Brochure
Adobe Acrobat PDF Installation Instructions
Adobe Acrobat PDF Owners Manual

Register your Pentair product online at www.pentair.com.

  • LIMITED WARRANTY: Pentair warrants its products to be free from defects in material and/or workmanship for a period of sixty (60) days (parts only) from the original date of purchase and/or installation. Customer agrees to prepay all shipping charges to Pentair.
  • EXTENDED WARRANTY: To receive a product extended warranty (longer than 60 days from the original date of installation), customer must:
  1. Register the product;
  2. Provide a copy of the sales receipt; and
  3. Provide a copy of the installation invoice, provided by the qualified installer, within 60 days of installation (if required). Certain products do not require qualified installation but still require product registration and copy of the sales receipt to receive the extended warranty.
  • TRADEGRADE WARRANTY: TradeGrade products must be purchased from a retail store (brick and mortar), pool builder or pool service company. If purchased online (via internet) the product will only receive a sixty (60) day limited warranty. View the list of TradeGrade products here.
  • ECOMMERCE (EC) WARRANTY: Products purchased from an Authorized Pentair Online Reseller receive a one (1) year (parts only) warranty from the date of purchase. The exceptions are: IntelliChlor cells and IntelliFlo SVRS pumps which receive a two (2) year warranty. EC products are not eligible for the bundled three (3) year extended warranty. To receive an eCommerce warranty, customer must:
  1. Register the product, and
  2. Provide a copy of the sales receipt
Visit www.pentair.com to submit your product warranty registration.
This information was updated on 04/05/2021. For the most current information and full warranty policy please visit www.pentair.com/warranty.

 Adobe Acrobat PDF Warranty Information
Hay muchas maneras diferentes de contactarnos, y nos gustaría hablar con usted sobre las preguntas de su compra, ayudarle a diagnosticar los problemas de su equipo y escuchar acerca de cómo podemos mejorar y todo lo que está en su mente.
Click Here
5am - 8pm Weekdays
6am - 6pm Weekends
Pacific Standard Time
Will-Call Hours Click Here
Be the first to know the latest news, deals & special events!


By signing up you indicate that you agree to the terms of our privacy policy.

Pool Supply Unlimited is an e-commerce company that loves water. We love to pump it, filter it, heat it, chlorinate it, light it up and stare at it while we're barbequing a fat, juicy steak. There are real pool professionals working here. Our guys have seen thousands of pools in their careers, no exaggeration. We are based in Southern California and can land most products to your door (within the 48 contiguous states) in less than a week.
Visa Mastercard Discover American Express PayPal