This fits? Model 4021n

4021n is not a recognized model number

im trying to replace american standard toilet tank top model # 735122 The 735121 is available and looks just like it so would that one work ?

They are not the same. They are different depths, the 735122 would be too small for your tank. -American Standard Tech Team

have an Amer. Standard Cadet 3 complete round front. (241417) 7 years old. Need a new lid will model 735121 fit it?

Contact American Standard and they will tell you what will fit.

Will this fit model #4370A?

No, this lid will not fit model number 4370A. The correct lid for that tank is part number, 735199-400.020 (in white). Sincerely, Your American Standard Consumer Connection Team

Color	White
Brand	American Standard
Material	Ceramic
Style	Contemporary
Shape	D-Shaped
Product Dimensions	17.37"L x 8.68"W
Item Weight	8.3 Pounds
Operation Mode	Manual
UPC	033056673959
Global Trade Identification Number	00033056673959
Manufacturer	American Standard
Part Number	735121-400.020
Item Weight	8.3 pounds
Item model number	735121-400.020
Is Discontinued By Manufacturer	No
Size	1 Pack
Item Package Quantity	1
Included Components	toilet seat and parts
Batteries Included?	No
Batteries Required?	No
Warranty Description	Limited 1-Year Warranty

American Standard 735121-400.020 Cadet 3 Toilet Tank Lid, 1 Pack, White

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