What are the exact dimensions

There is a pdf CAD drawing with dimensions available under the specification tab in the amazon ad. OD of the cover is 14.18"; center of screw to opposing screw is 12.68"; thickness is 1.60"; diameter of the inner lip which fits inside the actual pipe is 11.35"

How to take the lid off? I only need the vent part to keep debris out of culvert.

There are spots for Panhead screws to attach it, however it just slides into the pipe until it hits the lid. You should be able to remove, but it was quite a snug fit for the corrugated pipe I had.

Can this lid be used for a concrete septic tank?

I did, I used it with a riser though

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Polylok 12" Heavy Duty Cover/Lid for Corrugated Pipe (PN: 3004-C)

Polylok 12" Heavy Duty Cover/Lid for Corrugated Pipe (PN: 3004-C)

Product ID: 93591981

Details

Brand
Polylok
Color
Green
Exterior Finish
Stainless
Item Weight
1.7 pounds
Item dimensions L x W x H
14.5 x 14.5 x
Material
High Density

📏Fits 12" corrugated pipes precisely

🔒Square drive screws for secure locking

🛡️Top-tier UV protection for durability

€ 153.47

Duties & taxes included

In stock

Sold byAmazon SlovakiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛠️ Lock in durability and security with Polylok’s heavy-duty cover!

ULTIMATE UV SHIELD - Engineered with the highest level of UV protection to withstand harsh outdoor conditions without cracking or fading.
SKID RESISTANT SURFACE - Enhanced grip design prevents slipping, providing safety and stability during installation and maintenance.
TAMPER RESISTANT SECURITY - Square drive screws discourage unauthorized access, giving you peace of mind in any environment.
AIRTIGHT WATERTIGHT SEAL - Includes a foam gasket that guarantees no leaks, keeping your system secure against moisture and contaminants.
PRECISION FIT FOR 12 PIPES - Seamlessly compatible with most Polylok 12" products and corrugated pipes, ensuring a perfect seal every time.

The Polylok 12" Heavy Duty Cover/Lid (PN: 3004-C) is a robust HDPE cover designed to fit 12" corrugated pipes with precision. Featuring a skid-resistant surface, premium UV protection, and a foam gasket for airtight and watertight sealing, it ensures long-lasting performance. Equipped with square drive screws, it offers enhanced security against unauthorized entry, making it the go-to choice for professional-grade pipe protection.

Specifications

ASIN	B00JEL4V6K
Best Sellers Rank	#116,825 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #3,620 in Pipe Fittings
Brand Name	Polylok
Color	Green
Customer Reviews	4.6 4.6 out of 5 stars (116)
Exterior Finish	Stainless Steel
Item Dimensions	14.5 x 14.5 x 1.75 inches
Item Weight	1.7 pounds
Manufacturer	#N/A
Manufacturer Part Number	3004-C
Material Type	High Density Polyethylene (HDPE)
Model Number	3004-C
Number of Packs	1
Number of Pieces	1
Size	12 Inch
Thread Size	12 inch
Unit Count	1 Count

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