Skip to content
Shop Your Local Store Ship to Your Hometown Store
Pro & Contractor Accounts Apply for Net Terms
100,000+ Products Trusted Authentic Brands

HTH Pool Care Granule Shock Treatment 12 lb

Made in America

Support American manufacturers + independent hardware retailers in one purchase.

A strong 56% chlorine granule shock that clears cloudy, algae-prone water and gets your pool swim-ready fast.
Hth MPN 52037R
Sold Locally Only

This product isn’t sold on our website — see your local hardware store.

Typical Store Price i
Typical store price: low $58.99, average $69.99
In-Store Exclusive

This one's worth the trip to the store.

Brands like Weber, Milwaukee, Yeti, and DeWalt restrict where their products can be sold online — and for good reason. In-store buyers get authentic products, full manufacturer warranty, and access to pricing that simply isn't allowed to be advertised on the web.

  • Authorized dealer network · Full manufacturer warranty & support
  • Guaranteed authentic · No counterfeits, no gray-market resellers
  • The brands set these standards · Be wary of sellers who don't follow them
Why isn't this online? The whole story →

About Product Overview

Green, cloudy, or algae-prone pool water calls for a strong shock treatment, and this HTH granule shock delivers with 56% available chlorine. It's built to knock out contaminants fast and get your water back to clear, swim-ready condition. The 12 lb container gives you enough product on hand for multiple treatments over the season.

  • Product Type: Shock Treatment
  • Available Chlorine: 56% (40%-59% range)
  • Product Form: Granule
  • Container Size: 12 lb
  • Sub Brand: HTH Pool Care

The Details Specifications

Special Handling Special handling and shipping requirements apply. UN #UN2880.
Brand Hth
UPC 073187520371
Case Pack Quantity 3 per case
Retail Unit Quantity 3
Dimensions (L × W × H) 12 × 21 × 7
Weight 38 lbs
Country of Origin USA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab
Shop Local · Support Independent

Every order helps keep your local hardware store on the corner.

Why we built NHG
You might find it for less locally. Independent retailers often offer competitive pricing — some products are even cheaper in-store than online.
Real expert advice — not search results. Independent hardware staff know their inventory and the local conditions you're working in.
Keep the neighborhood working. Every dollar spent at an independent retailer returns roughly 3x more to your local economy than at a national chain.

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare