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Ships within 48 hours · Estimated delivery Jul 31 - Aug 5
MPR 300 has a rating of MERV 5
OEM specified as 242
prevents future rust formation
RAINPROOF: Rain or watering 30 minutes after application will NOT wash away effectiveness
Easy Scheduling: TORK 24-hour time switches allow you to set automatic schedules for appliances that need to be run at the same time every day
PacifiClear Cal-Shock 25 Lb. Granule Precision Products MPR 300 has a ratingGranular form of chlorine used to chlorinate, sanitize, and disinfect swimming pools. Contains 65% available chlorine. Convenient, easy to use, and fast dissolving. Chlorine is released when the product is dissolved in water and works continually to prevent growth of algae and bacteria. Used for shocking or super chlorinating pool water to destroy organic contaminants and clear up hazy water. Can also be used as a sanitizer and disinfectant for:
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