Loop-Loc
20' x 40' Rectangle with 4' x 8' Right 2' Offset Step Ultra-Loc III Solid In-Ground Pool Safety Cover
Best safety solution for large rectangular pools with offset steps.
Protect your pool with the LOOP-LOC Ultra-Loc III Solid Safety Cover. Designed for a 20' x 40' rectangular in-ground pool with a 4' x 8' right offset step, this cover offers exceptional safety and durability. Its unique Ultra-Loc III Solid material is 33% lighter than standard vinyl yet incredibly strong, providing a secure barrier. The cover blocks 100% of sunlight to prevent algae growth and is built to withstand various weather conditions. It meets and exceeds ASTM safety standards and carries the U.L. Seal of Approval, ensuring peace of mind.
$2852.60
Owner Satisfaction
4.8
/ 5
Category Rank
1
/ 1138
Best Pool Covers & Ground Cloths
Price vs Category Average
+469%
Above average
Size
2040
/ ' x ' Rectangle
Who it's for
- Homeowners with custom pool designs needing a secure fit
- Parents and pet owners prioritizing maximum backyard safety
- Pool owners wanting minimal spring cleaning and algae prevention
Who should skip it
- Individuals lacking the physical strength or storage space
- Owners unwilling to manage manual or automatic water drainage
- Budget-conscious buyers seeking an affordable seasonal cover
Performance breakdown
Material Weight Efficiency
Ultra-Loc III technology significantly reduces handling strain without sacrificing structural integrity.
Algae Prevention
Total sunlight blockage effectively halts photosynthesis for a cleaner spring opening.
Safety Compliance
Exceeds rigorous ASTM standards for maximum peace of mind around water.
Installation Precision
Computer-aided design ensures a tailored fit for complex offset step configurations.
Debris Management
Solid barrier design keeps contaminants out while the pump handles accumulation.
Durability Longevity
Robust construction backed by a substantial 15-year pro-rated warranty.
Key Specs
Size
20' x 40' Rectangle
Step Configuration
4' x 8' Right 4' Offset Step
Material
Ultra-Loc III Solid
Pool Type Compatibility
In-Ground
Pool Shape Compatibility
Rectangular
Debris Filtration Level
Solid Barrier
Drainage Method
Automatic Pump
Certification
Meets or exceeds ASTM F 1346-91 standards
Features
- Blocks 100% of sunlight to prevent algae.
- Durable material bounces back after water removal.
- 33% lighter than standard solid vinyl covers.
- Computer-aided design ensures a perfect fit.
- Stays tight and looks great in any weather.
- Includes Automatic Cover Pump for convenience.
- Environmentally friendly and recyclable material.
- Supports heavy weight for enhanced safety.
What customers say
Customers overwhelmingly praise the Loop-Loc Ultra-Loc III for its premium quality and unparalleled safety, especially in large custom sizes. The core theme is reliability, driven by the robust construction that keeps pools completely free of debris during the off-season. Reviewers consistently highlight the precise, custom fit, noting it secures tension perfectly over large areas. While the initial investment is premium, users find excellent long-term value due to the material's exceptional durability against harsh conditions and UV exposure, often lasting over a decade. Satisfaction stems from the superior security and cleanliness this cover provides, making it the gold standard for pool protection.
Know before you buy
The Ultra-Loc III material is engineered to be 33% lighter than traditional solid vinyl, making it significantly easier to install and remove. Despite the reduced weight, it maintains high-strength durability and is designed to bounce back to its original shape after water is removed.
Yes, the Ultra-Loc III material is a solid barrier that blocks 100% of sunlight. By preventing light from entering the pool, it effectively inhibits algae growth, which simplifies your pool opening process in the spring.
Because this is a solid cover, it does not allow water to pass through. To prevent water accumulation, the product includes an automatic cover pump that removes standing water from the surface.
Yes, this cover meets or exceeds the ASTM F 1346-91 safety standards and has earned the U.L. Seal of Approval. It is designed to support significant weight, providing a secure barrier for your pool.
This specific model is precision-engineered for a 20' x 40' rectangular pool with a 4' x 8' right offset step. Loop-Loc uses computer-aided design to ensure the cover fits your specific pool dimensions and step configuration perfectly.
Depending on your pool deck material, you can choose between brass concrete anchors, brass anchors in 9-inch aluminum pipes, or brass wood deck anchors. These options ensure the cover remains securely anchored regardless of your deck surface.
Still have a question?
Ask Hayley anything about this product before you decide.