Rinnai FSELB9004SP 4" Diameter 90° Elbow for 98 Series Non-Condensing Tankless Water Heaters

- Item #: BCI1840486

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4" Diameter 90° Elbow for 98 Series Non-Condensing Tankless Water Heaters

This is a 4" 90° elbow for the Rinnai R98i Series tankless water heaters. Manufactured by ProTech, their FasNSeal® line of vent kits are made from AL29-4C® which is a superferritic stainless steel designed for extreme resistance to chloride ion pitting, crevice corrosion and stress corrosion cracking, as well as general corrosion in oxidizing and moderately reducing environments.

Each vent length and component features a built-in mechanical locking band and gasket. Parts are simply pushed together to a stop bead, which renders the joints air and water-tight. By tightening the integrated mechanical locking band, parts are fastened together in seconds. FasNSeal® can be taken apart and reassembled in minutes, making inspection, maintenance or rerouting of FasNSeal® systems a breeze.


  • For Use with RC98 and R98LS Models
  • GSA Approved
  • Resists Chloride Ion Pitting, Crevice Corrosion And Stress Corrosion Cracking
  • Made From Superferritic Stainless Steel
  • Built-In Mechanical Locking Band And Gasket
  • Professional Installation Recommended
  • Includes:
    • (1) 90° Elbows


  • Diameter: 4"
  • Effective Length: 4.4"

Additional Rinnai Links

Our SKU: Rinnai FSELB9004SP

This product is listed under the following manufacturer number(s):

  • Rinnai FSELB9004SP

*Denotes a finish or option that has been discontinued

Rinnai FSELB9004SP Product Specifications

CSA Approved Yes
Configuration Elbow
Diameter 4
Pipe Inside Diameter 4
Product Weight 1
Vent Pipe Size 4

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