ZWO D21 IR-CUT protect window


Free Shipping though China air mail!

SKU: ZWO-D21IR-CUT1 Category:

Product Description

IR Window graph
ZWO D21 IR-CUT protect window

Suitable Typy: ASI120 series , ASI120-S series, ASI178 series, ASI290 series, ASI224MC and ASI185MC cameras.

Protect the sensor from dust and humidity.

Before first usage of this product read manuals and install correct drivers and software.


  • Fast Shipping(amount ≧ 299USD) for free
  • Fast Shipping(amount < 299USD) : $20.00
  • Free Shipping(amount < 299USD) (Air Mail, 3-4 weeks) (Free)


  1. Fast Shipping: we will choose DHL, UPS, TNT, EMS etc to deliver it. Usually you will get your package in one week. We provide free fast shipping for order ≧ $299 or charge extra $20 for order < $299.
  2. Free Shipping: we will ship via DGM or China Post Registered Air Mail. It usually costs 2-3 weeks to reach US or Europe and costs 3-4 weeks to reach far places.
  3. Customers from Brazil and Chile should leave a message to provide your CPF or CNPJ as your custom needs it.
  4. Customers from Russia need to provide the name of your company.

Tracking site:


China air mail:


  • The price list on our website is USD without tax.
  • Please note that buyers areliable to pay tax involved, such as Import tax, VAT , customs handling fee, etc. The additional fees may be collected at time of delivery by courier.
  • For best local service we advise customers buy our cameras form local dealers.

Warranty and Return Policy

  • We provide 2-year warranty for our products, we will offer the repair service for free or replace for free if the camera doesn’t work within warranty period. After the warranty period, we will continue to provide repair support and service on a charged basis.
  • This warranty does not apply to damage that occurred as a result of abuse or misuse, or caused by a fall or any other transportation failures after purchase.
  • Customer must pay for shipping when shipping the camera back for repair or replacement
  • If you get a faulty camera, please contact us as soon as possible though email: Please describe the problem in detail and we will do our best to help you solve the problem. Most instances perceived problems are simply bad driver install or software configuration.
  • For customers who bought the camera from our dealer, dealer is responsible for the customer service for you.

Do you have uestion, answer or comment? Post here!

  1. :

    Mark, I couldn’t agree more! My only wish would have been to clone myelsf so that I could have been in multiple places at the same time. For instance, I would have liked to have had a coffee with you. Good seeing you in the halls however fleetingly and thanks for your par excellence tweetstream I will reference when I coalesce my own thoughts.

  2. :

    Can this IR cut window be used to replace the AR window on the ASI224MC?

    • Sam Wen


      yes, this is the one you need

  3. (verified owner):

    Does it matter which side of the protect window faces outward from the camera? Is one side coated and the other side not?

    • Sam Wen


      I think it doesn’t matter as the light all come from outside
      one side IR-CUT and the other side should be AR

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