Winter Block Winter Pool Cover for 18' x 33' Oval Aboveground Pools — Heavy-Duty UV, Winch & Cable, 8-Year Warranty

Winter Block Premium Winter Pool Cover for 18' x 33' oval above ground pools is a heavy-duty, UV-treated laminated polyethylene cover that protects your pool from debris, rain, and snow through harsh seasons.

This cover is built thicker than standard winter covers and is designed to simplify winterizing your aboveground oval pool. Constructed from laminated polyethylene sheeting with an 8x8 scrim and reinforced stitching, it balances strength and manageable weight. It includes a 3-foot overlap for easier installation, perimeter grommets, a steel cable and a winch so you have everything needed to secure the cover quickly.

How does this cover keep debris and water out during winter?

The laminated, tightly woven material and secure perimeter grommets form a barrier that prevents leaves, twigs and most rain-splashing from entering the pool. The overlap and steel cable with winch let you tension the cover so it lays flat and drains off most melted snow.

• Laminated polyethylene with 8x8 scrim for low permeability
• Perimeter grommets spaced for even tension
• Included steel cable and winch for secure fastening
• 3 feet total overlap for an easier fit and edge coverage

Will this fit my 18' x 33' oval above ground pool?

The Winter Block Premium cover measures 21' x 36', sized to fit an 18' x 33' oval above ground pool with the recommended overlap. The extra material accounts for typical rim dimensions and allows for the necessary fastening and tensioning without stretching the cover.

• Cover dimensions: 21' x 36'
• Compatible with standard 18' x 33' oval above ground pools
• Extra 1.5' overlap on all sides included
• Works with included winch and cable for secure fit

How durable is the material and what about sun damage?

This model uses thicker laminated polyethylene and heavy-duty high-density stitching for superior tensile strength compared with basic covers. It also receives UV treatment designed to resist sun degradation so it holds up through repeated seasonal exposure.

• 8x8 scrim woven reinforcement for tear resistance
• High-density polyethylene stitching for long-term durability
• UV-treated surface to slow sun-related breakdown
• Engineered for cold-weather tensile strength

What comes in the box and how easy is installation?

Winter Block includes the cover, perimeter grommets already installed, a steel cable and a manual winch so you can install the cover with minimal additional tools. The cover’s lighter-than-expected weight and the 3-foot overlap make positioning and fastening manageable with two people.

• Pre-installed grommets around the perimeter
• Steel cable and manual winch included for tensioning
• Lightweight laminated construction for easier handling
• Recommended two-person install for best results

Who is this for? If you own an 18' x 33' oval above ground pool and want a more robust winter protection option than standard covers, this Winter Block Premium cover is made for you. It suits homeowners who prefer an all-in-one package (cover, grommets, cable, winch) and those living in regions with heavy leaf fall, snow, or strong winter sun who need a UV-treated, tear-resistant solution. While not intended for ice-bearing load support, it provides a strong barrier against debris and typical winter moisture so your pool requires less cleanup and maintenance come spring.