Applicable model: LG / Shinco / Gree / Aux / Haier / Hisense, Round hole diameter: 15cm(6″), Name: Adjustable Window Kit Plate For Portable Air Conditioner, Color: White, Maximum adjustment length: 67~120cm (26~47″), Model: A16624.
Price history, coupons and price alert are available on this page. Do you want to know what the best price is?
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. You can get coupon down below.
Link: Banggood product page
1. ($34.53): Cuponation9
just apply this code in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
There were country-specific coupon codes published on Couponsfromchina social channels and price alerts. Coupon price may vary by country, because there’re different VAT rates, shipping cost etc. There is a chance that some latest coupons are still working:
Old coupons (from the oldest to the newest): BGbe2133, 8wEbgaInS5, hoNEYbGdeAlS, BG6d2f05
(I don’t think these’re gonna work, but you can try ’em out anyway)
Price history and price alert
Do you need price history chart (for all/most countries) for 120cm Adjustable Air Conditioner Window Kit Plate? There we go. The lowest price was: $27.99.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).