Product Information
Description
LOOP-LOC Ultra-Loc II 20' x 40' Rectangle w/ 1' Offset Step Solid Pool Safety Cover, Green
Solid shade, mesh panels do the draining.
The LOOP-LOC Ultra-Loc II 20' x 40' Rectangle w/ 1' Offset Step solid pool safety cover, Green (SKU PST-LLS204048SSL1) blocks 100% of sunlight so nothing grows under it and no dirt or leaf tea ever reaches the water. Built-in mesh drain panels let rain and melting snow pass through while straining out debris, and the material runs about 33% lighter than typical solid vinyl cover fabric, so a solid cover finally handles like something two people can manage. LOOP-LOC covers are UL tested, exceed ASTM safety cover standards, and release only with the LOOP-LOC installation tool. Backed by a 15-year pro-rated warranty.
Solid Means Nothing Gets In
Ultra-Loc II blocks 100% of sunlight, and light is what algae runs on. Cut it to zero and the pool sits dormant all winter instead of turning over in March. The solid deck also keeps dirt, pollen, seed pods, and the tea-colored runoff that comes off wet leaves from ever reaching your water. Owners who switch from mesh to solid usually notice it first at the opening: less shock, less brushing, and a filter that does not run for three days straight.
Mesh Panels Do the Draining For You
Every solid cover has to move rain and snowmelt somewhere. Ultra-Loc II handles it with built-in mesh drainage panels that pass water into the pool while straining out dirt and debris. The material also bounces back rather than stretching, so water finds the drain panels instead of settling into a pocket in the middle of the cover. That means no cover pump running on an extension cord through a January freeze, and no ice bowl sitting on your fabric.
33% Lighter, and Tamper Proof
The Ultra-Loc material runs about 33% lighter than typical solid vinyl cover fabric, which is the difference between a cover you can put on with a helper and one you dread every October. It still comes off only with the LOOP-LOC installation tool, so kids cannot pull back a corner. Stainless steel springs hold every strap under even tension, and brass anchors thread flush into the deck when the cover comes off for swim season.
Who It's For
Green-Water Spring Openers
If your pool opens as a swamp every April, 100% light blockage plus zero debris intake is the strongest fix available.
Families With Kids & Pets
Anchored and tensioned to spec, Ultra-Loc II is a tensioned barrier over the water that exceeds ASTM F1346 requirements.
Heavy Debris Yards
Under oaks and pines, a solid deck keeps every leaf and seed pod out of the pool instead of straining it through a mesh weave.
Solid Without the Weight
For owners who want solid-cover water quality but have been put off by how heavy traditional solid vinyl covers are to handle.
Why PST Customers Pick This
100% Sunlight Blocked
The solid deck stops all sunlight, which shuts down algae growth under the cover for the entire off-season.
Built-In Mesh Drain Panels
Rain and snowmelt pass through the drain panels while dirt and debris stay on top, so no cover pump has to run all winter.
33% Lighter Material
Ultra-Loc fabric is about a third lighter than typical solid vinyl cover material, which keeps install and removal a two-person job.
Tamper-Proof Release
The cover only releases with the LOOP-LOC installation tool, so it cannot be pulled back by a curious child.
Brass Anchors, Flush Fit
Brass anchors disappear flush with the deck when the cover is off, and stainless steel springs hold the cover taut when it is on.
UL Tested, Exceeds ASTM
LOOP-LOC covers have been through outside testing at Underwriters Laboratories and exceed ASTM standards for manual safety covers.
Water Level Notice
Solid Ultra-Loc covers require the pool water level to sit 12 to 16 inches below the top of the pool, because that water supports the cover under snow and ice load. LOOP-LOC voids the warranty if the level is not maintained. The cover also only meets ASTM F1346 when every strap is anchored into sound decking and fully tensioned, so never leave it partially attached.
Full Specifications
Frequently Asked Questions
How is Ultra-Loc II different from LOOP-LOC Super Dense Mesh?
Ultra-Loc II is solid: it blocks 100% of sunlight and keeps all dirt and runoff out of the pool, draining surface water through built-in mesh panels. Super Dense Mesh drains through the entire cover and blocks about 97% of sunlight, which is lower maintenance but lets fine debris pass into the water. Choose Ultra-Loc II for the cleanest possible spring water, Super Dense Mesh for the least winter attention.
Do I need a cover pump with this cover?
No. This Ultra-Loc II is built with mesh drain panels, so rain and snowmelt pass through them into the pool instead of pooling on the solid fabric. A cover pump is only required on all-solid LOOP-LOC covers ordered without drain panels.
What water level does a solid cover need?
Keep the pool filled to 12 to 16 inches below the top of the pool through the winter. The water column is what supports the cover under snow and ice, and LOOP-LOC voids the warranty if the level is not maintained. Check it after a long dry stretch or a big thaw.
How do I pick the right size?
Order by your pool's water surface, not the finished cover dimensions. This listing fits a 20' x 40' pool, and LOOP-LOC sews the cover oversized so it overlaps the deck on all sides and anchors under tension. Measure at the waterline, match the listed size, and match the step or offset configuration in the title if your pool has one.
Can I install this myself?
Yes, with a helper and an afternoon. You lay the cover out, drill the anchor holes, thread the stainless springs onto the straps, and tension each strap with the LOOP-LOC installation tool. Once the anchors are set, seasonal on and off takes minutes. Since the pro-rated warranty assumes correct installation, specialty stone or stamped decks are worth handing to a professional installer.
What does the LOOP-LOC warranty cover?
Every LOOP-LOC mesh and solid safety cover carries a 15-year pro-rated manufacturer warranty against defects in material and workmanship under normal use, when installed by a qualified pool professional. Keeping the pool water at the correct level is a condition of coverage.
Order Your LOOP-LOC Ultra-Loc II Cover From PST
Authorized LOOP-LOC dealer, backed by PST Pool Supplies' support team from checkout through spring opening.
Additional Info
| Category | Seasonal Pool Winterizing Pool Safety Covers |
| SKU | PST-LLS204048SSL1 |
| MPN | LLS204048SSL1 |
| Manufacturer | Loop-Loc |
| Weight | 95.0 lb |
Let customers speak for us
The bulb was lost in transit and PST reached out proactively to ask if I wanted a replacement shipped out!
part was an exact fit for my old spa, price was great thanks
Fast shipping and great customer support. I appreciate all of the help in getting my spa up and working.
The cord worked perfectly when I upgraded my older Balboa spa and pump.
I had a leak in which water was leaking out to the waste line. I could hear the water trickling in the waste line. The spider gasket in this kit resolved the issue.
Shipping and delivery were quick. Would definitely order again from PST.
Fit perfectly and works great.
Awesome item. I can control my spa from my phone!! Love it. Item was shipoed out and delivered so fast. Hooking it up was a breeze.
The support staff to make the orders were outstanding; even though I made a quantity error. And the timeliness of all the repair parts I needed to get the OLD Tiger Shark running as good as new was wonderful. My pool is crystal clear.
Fit perfectly on our bubbler lightv
The only place I could find with the part I needed. Delivery was fast and the price was great. Best pool supply store on the web.
Part was easy to find and arrived a couple of days earlier than originally scheduled.
The ceramic spindle in the center of the original impellor broke. Replacement with this part was super easy and pump performs like new.
