Product Information
Description
GLI Classic 18' x 40' Solid Winter Pool Cover
The honest workhorse cover.
The GLI Classic solid winter cover for 18' x 40' in-ground pools (SKU PST-451840RECLA5BX) shuts your pool down for the off-season behind an opaque polyethylene panel that blocks all sunlight, so algae has nothing to feed on and not one leaf reaches the water. The finished cover measures 23' x 45', giving you 5' more than the pool in each direction to lay out flat on the deck and anchor down. Brass grommets and loops run the full perimeter for water tubes.
Why PST Customers Pick This
Total Sunlight Block
The opaque polyethylene panel stops 100% of light from reaching the water. Algae cannot photosynthesize in the dark, so the pool that goes under the cover in October is close to the pool you uncover in April.
Nothing Gets In
Solid fabric means leaves, silt, pollen and acorns stay on top of the cover instead of rotting on your pool floor all winter. Spring opening turns into a rinse and a vacuum instead of a two-day recovery.
Seams Built for Load
A double folded, double stitched hem wraps the perimeter and Hold-Tite reinforced seams run the panel joins. These are the two places winter covers fail first, and both are overbuilt here.
Brass Grommets and Loops
Solid brass grommets circle the cover with loops for water tubes. Brass will not rust into an orange streak down your coping the way plated steel does after a couple of freeze cycles.
Best Value in the Lineup
Classic is GLI's entry solid cover and the one that makes sense if you replace covers on a schedule rather than chasing the longest warranty. Same construction language as the pricier lines, shorter warranty term.
Specifications
Frequently Asked Questions
What size cover do I need for my pool?
Order by pool size, not cover size. This cover is built for a 18' x 40' pool and ships as a 23' x 45' panel, which gives you 5' of extra material across each dimension to lay on the deck. Measure your water surface at its longest and widest points and match that number.
Do I need water tubes and a cover pump?
Yes to both. Brass grommets and loops run the perimeter so water tubes can hold the edge down; never use bricks or blocks, which chip coping and tear fabric. Because the cover is solid, rain and snowmelt collect on top, so a cover pump is needed to keep that weight off the seams.
How is a solid cover different from a mesh safety cover?
A solid cover blocks 100% of sunlight and every particle of debris, which means the cleanest possible water at opening, but it holds water on the surface and needs a pump. A mesh safety cover drains through and anchors into the deck to hold weight. This is a winter cover, not a safety cover, and is not rated to support a person.
What does the warranty cover?
GLI backs this cover for 8 years limited, with the first year at full coverage and the balance pro-rated. It covers defects in materials and workmanship. Damage from ice, standing water, storms, animals or improper installation is not covered, which is exactly why a cover pump and a full set of water tubes matter.
Close Your 18' x 40' Pool the Easy Way
Order the GLI Classic in your pool size and it ships free, factory direct.
Additional Info
| Category | Seasonal Pool Winterizing Winter Pool Covers |
| SKU | PST-451840RECLA5BX |
| MPN | 45-1840RE-CLA-5-BX |
| Manufacturer | GLI Pool Products |
| Weight | 17.5 lb |
Let customers speak for us
Easy installing with great benefits for drinking water
Exactly what we needed to fix our filter
Quick shipment
Exactly what I needed.
Perfect fit ! Thanks for the great quality product and fast shipping!
Fit perfect
after 2 other suppliers failed to understand the part PST Pool Suppliers filled my order and took time to explained the part to me to insure it was what I wanted and I received it in short time
Fast delivery and exactly what i needed!
This was a game changer to be able to purchase the piece that was broken on our pool vacuum and not have to buy an entire new unit when it was still working fine otherwise. Website was easy to navigate and secure for payment. Shipping took a little longer than what was offered on another website, but otherwise our experience was great and our vacuum is uo and running again thankfully!!
The part came and was exact match and so far has been working great . Just wish you guys offered different shipping options because it took a week to get it .
Spa came with this. But swim portion did not. Now it does. Highly recommend for remote control.
The bulb was lost in transit and PST reached out proactively to ask if I wanted a replacement shipped out!
Helpful and responsive when USPS was delayed.
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.