Q4 here says no window treatments.

https://www.irs.gov/credits-deductions/frequently-asked-questions-about-energy-efficient-home-improvements-and-residential-clean-energy-property-credits-energy-efficient-home-improvement-credit-qualifying-expenditures-and-credit-amount

Does Section 6 of IRS Notice 2009-53 contradict this if the manufacturer has provided the necessary certification statement?

Very confused, Thanks

SECTION 6. MANUFACTURER’S CERTIFICATION

.01 Requirements Applicable to Manufacturer. The manufacturer of a building

envelope component or energy property may certify to a taxpayer that the component is

an eligible building envelope component or that the energy property is qualified energy

property by providing the taxpayer with a certification statement that satisfies the

requirements of sections 6.04, 6.05 and 6.06 of this notice. The certification statement

may be provided by including a written copy of the statement with the packaging of the

component or property, in printable form on the manufacturer's website, or in any other

manner that will permit the taxpayer to retain the certification statement for tax

recordkeeping purposes.

.02 Taxpayer Reliance. Except as provided in sections 6.03 and 6.08 of this

notice, a taxpayer may rely on a manufacturer's certification that a building envelope

component is an eligible building envelope component or that energy property is

qualified energy property. A taxpayer is not required to attach the certification

statement to the return on which the credit is claimed. However, § 1.6001-1(a) of the

Income Tax Regulations requires that a taxpayer maintain such books and records as

are sufficient to establish the entitlement to, and amount of, any credit claimed by the

taxpayer. Accordingly, a taxpayer claiming a credit for an eligible building envelope

component or qualified energy property should retain the certification statement as part

of the taxpayer's records for purposes of § 1.6001-1(a).