what is the inside hole dimensions not the outgide dimensions?

This seat opening measures 8" at the widest point and 12" at the longest point. Sincerely, Your American Standard Consumer Connection Team.

Will this fit American Standard model 4225A?

Hello, The 4225A is your tank number, so it would depend on the bowl you have. If you have a standard, elongated bowl, this seat will work. Thank you, Your Consumer Connections Team

Will this fit on a american standard with 6.0 lpf and 1.6 gpf ?

The numbers that you are providing are only the liters and gallons per flush of the toilet. That doesn't indicate what shape of bowl you have. This seat fits on a standard elongated toilet bowl. Sincerely, Your American Standard Consumer Connection Team

What is the length of the seat from the center of the bolt holes to the front edge of the seat?

About 18 1/2 inches. This fit all 3 of my toilets.

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Transitional Elongated Toilet Seat, Soft Close, White | Slow Close Toilet Seat: Includes Bottom Mount Hardware, Durable Solid Plastic, Easy Clean, Fits Elongated | 5503A00B.020

Product ID: 289318178

Details

Brand
American
Color
White
Item Weight
2.9 pounds
Material
Polypropylene
Number of Items
1
Product Dimensions
18.63"L x

✨Durable, glossy polypropylene

🔇Silent slow-close hinges

🛠️Easy bottom-mount installation

129512CFA

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Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚽 Upgrade your throne with silent sophistication!

BUILT TO LAST - Crafted from robust polypropylene for long-lasting durability and easy cleaning.
HASSLE FREE SETUP - Includes all bottom-mount hardware for a quick, tool-free installation.
EFFORTLESS UPGRADE - Sleek transitional design that instantly elevates your bathroom’s aesthetic.
WHISPER QUIET CLOSE - No more slamming—experience serene bathroom moments with soft-close technology.
PERFECT FIT EVERY TIME - Designed to fit most elongated toilets seamlessly for a flawless upgrade.

The American Standard Transitional Elongated Toilet Seat combines durable polypropylene construction with a sleek, modern design and whisper-quiet slow-close hinges. Engineered for easy bottom-mount installation, it fits most elongated toilets and offers a clean, comfortable, and stylish bathroom upgrade that eliminates noisy slams.

Specifications

ASIN	B084JHKFCW
Best Sellers Rank	#1,351 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #10 in Toilet Seats
Brand Name	American Standard
Color	White
Customer Reviews	4.4 4.4 out of 5 stars (2,214)
Included Components	Toilet Seat, mounting hardware
Item Dimensions L x W	18.63"L x 14.19"W
Item Type Name	Slow-Close Toilet Seat
Item Weight	2.9 pounds
Manufacturer	American Standard
Manufacturer Part Number	5503A00B.020
Material Type	Polypropylene (PP)
Model Number	5503A00B.020
Number of Items	1
Number of Packs	1
Operation Mode	Manual
Shape	Oblong
Style	Elongated Front
UPC	791556105287
Unit Count	1 Count

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