NT Window, Inc.

12 FL numbers: Ready 12 · Pending 0 · Not yet 0 (100% ready for 2026)

If an older number reads Not yet, look for a newer number from the same maker below. Some re-file under a new number.

FL numbers

FL #	Manufacturer	Category / type	2026 status	HVHZ
FL41875	NT Window, Inc.	WindowsSingle Hung	ReadyFL41875-R1: Approved	No
FL47143	NT Window, Inc.	WindowsDouble Hung	ReadyFL47143-R1: Approved	No
FL47144	NT Window, Inc.	WindowsHorizontal Slider	ReadyFL47144-R1: Approved	No
FL47145	NT Window, Inc.	WindowsFixed	ReadyFL47145-R1: Approved	No
FL47366	NT Window, Inc.	WindowsCasement	ReadyFL47366-R1: Approved	No
FL47634	NT Window, Inc.	WindowsMullions	ReadyFL47634-R1: Approved	No
FL48311	NT Window, Inc.	WindowsSingle Hung	ReadyFL48311: Approved	No
FL48312	NT Window, Inc.	WindowsDouble Hung	ReadyFL48312: Approved	No
FL48313	NT Window, Inc.	WindowsHorizontal Slider	ReadyFL48313: Approved	No
FL48314	NT Window, Inc.	WindowsFixed	ReadyFL48314: Approved	No
FL48315	NT Window, Inc.	WindowsCasement	ReadyFL48315: Approved	No
FL48316	NT Window, Inc.	WindowsAwning	ReadyFL48316: Approved	No

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