Watch Video

PIG® DrainBlocker® Drain Cover

Ideal For Repeated Use or Frequent Washdowns, For Square Drains Up to 36"
Protect your storm drains with the patented design that seals tight and won't rip. Guaranteed.   Read More 

PRICING (Based on quantity)

$696.00 $663.00
Pig Exclusive
This product has accessories — take a look 


Protect your storm drains with the patented design that seals tight and won't rip. Guaranteed.
  • Long-lasting -- great for outdoor deployment without worrying about degradation
  • PIG Tough -- top layer resists stretching, ripping, tearing and infrared light
  • Super-sealing -- bottom layer conforms to uneven surfaces and tightly seals drains
  • Diesel-compatible -- withstands prolonged exposure to diesel fuel and gasoline
  • Use cover for quick spill response or long-term, outdoor deployment
  • Eliminates the need to frequently deploy and remove a temporary cover or permanently seal your drains
  • Ideal for drain protection where liquid transfers, washdowns or other leak- and spill-prone jobs are common
  • DuPont Elvaloy technology provides lifelong flexibility plus chemical, UV and infrared light resistance to vinyl top
  • High-visibility yellow top layer draws attention to spills for increased safety
  • Includes a nylon storage bag for easy transportation and fast spill response
  • Need a custom size? Call 1-800-HOT-HOGS (468-4647)
  • Note: Elvaloy top can become slippery when wet. Please use caution.


Traffic Foot Traffic
Use With Square Drains Up to 36"
Color Yellow
Dimensions 42" W x 42" L x 0.335" H
Brand PIG
Drain Shape Square
Drain Size Up to 36"
Ideal For Repeated Use or Frequent Washdowns
Max liquid temp exposure Max Exposure Limit 225°F for up to 30 Minutes
Storage Temp Range Store from 0°F to 120°F
Temperature Limit Works from 0° to 160°F
Sold as 1 each
Weight 28 lbs.
New Pig Patent 8,117,686
# per Pallet 25
Composition Top - DuPont™ Elvaloy® Vinyl
Bottom - Urethane

1 - PIG® DrainBlocker® Drain Cover

1 - Nylon Storage Bag

UNSPSC 40141739
UV Resistant Yes
Pigalog® Page Number Page 169

Accessories for PLR404


Based on 3 reviews

By Richard


Alternate use for Drainblocker

To start, everything was delivered as described and on time,as usual from New Pig. We had a problem with water collecting in an underground fuel vault. We determined it was due to the roof overhang would shed rain water right on top of the manhole cover. Replacing it with new cover seals never kept all the water out. I purchased the DrainBlocker, slightly oversized, and we have been dry ever since. I have ordered 3 more since the first on!!

By Richard


Manhole cover blocker

I purchased one of these about a month ago on a trial to see if we could keep water out of a manhole. We had tried various gaskets, even caulking but nothing worked. This has done so well that I just got a second one for another manhole. I gave it a 4 on appearance just because I wish you could get a custom print on the top of it, although I realize this is probably not used by the majority like we use it.

By Papi


PLR404 Drain Cover

We keep two of these onhand at all times for emergency spill containment. The last two we had lasted several years and performed perfectly. Was time to replace, so went back with the same product!

Additional Information


Urethane Notice

Due to the nature of softer urethane, the physical properties of these products may change over time with exposure to certain environmental conditions like temperature, humidity, and UV radiation. Typical life expectancy is 5 years. Please inspect the stored product regularly to ensure it is in a usable state. For more details and for chemical compatibility, please call Technical Services.