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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5503A00B.020 Transitional Slow-Close Toilet Seat, White

Product ID: 284262999

Details

Brand
American
Colour
White
Item weight
2.9 Pounds
Material
Polypropylene
Number of items
1
Product dimensions
41.9L x 36W

✨Smooth, easy-clean surface

🔇Quiet slow-close hinges

🛠️Durable solid polypropylene

€ 126.51

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚽 Upgrade your throne with silent strength and sleek style!

EFFORTLESS MAINTENANCE - Smooth glossy surface wipes clean in seconds—hygiene meets convenience.
WHISPER QUIET SLOW CLOSE - No more slams—experience serene bathroom moments every time.
COMPLETE INSTALLATION KIT - Includes all mounting hardware for a hassle-free upgrade in minutes.
SLEEK TRANSITIONAL DESIGN - Fits most elongated toilets with a clean, modern aesthetic that complements any bathroom.
ROBUST POLYPROPYLENE BUILD - Engineered for longevity with thicker hinge points to withstand daily use.

The American Standard 5503A00B.020 is a durable, slow-close toilet seat crafted from solid polypropylene, designed to fit most elongated toilets. Featuring quiet-close hinges to prevent slamming, a smooth easy-clean surface, and included mounting hardware, it offers a seamless blend of functionality and modern transitional style—perfect for professionals seeking a reliable, low-maintenance bathroom upgrade.

Specifications

ASIN	B084JHKFCW
Best Sellers Rank	803,890 in DIY & Tools ( See Top 100 in DIY & Tools ) 3,207 in Toilet Seats
Brand	American Standard
Colour	White
Customer Reviews	4.4 4.4 out of 5 stars (2,246)
Included Components	Toilet Seat, mounting hardware
Item Dimensions L x W	41.9L x 36W centimetres
Item Highlight	Slow Close Toilet Seat: Includes Bottom Mount Hardware, Durable Solid Plastic, Easy Clean, Fits Elongated \| 5503A00B.020
Item Type Name	Slow-Close Toilet Seat
Item Weight	2.9 Pounds
Manufacturer	American Standard
Material	Polypropylene (PP)
Model Number	5503A00B.020
Number of Items	1
Number of Packs	1
Operation Mode	Manual
Part Number	5503A00B.020
Shape	Oblong
Style	Toilet Seat
UPC	791556105287
Unit Count	1.0 count

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