4 Pack Stanley 11-921A "1992" Heavy Duty Utility Blades w/Dispenser 100 per Package sleeves The multi-port valve of the

The multi-port valve of the Sand Dollar filter puts all filter functions right at your fingertips—just rotate the handle to the desired position

Noise Reduction Rating (NRR)* 33 dB

Fits Pentair SM & SMBW 2000 Series pool and spa stainless steel filters

UL Listed and CSA certified

4 Pack Stanley 11-921A "1992" Heavy Duty Utility Blades w/Dispenser 100 per Package sleeves The multi-port valve of thePrecision honed blade edge for consistent, long lasting cutting life. Blade dispenser can be easily mounted to wall. Steel construction. Precision honed edge for consistent cutting life. Blades fit most standard utility knives