Although it's an unused item, there's a crack in the rubber part on one side. Please check the photos. 【Easy Installation, No Construction Required】 Opening width: 2.8CM~4.2CM No installation work is required! Insert the legs of this product into the grooves of the sash so that they adhere to the inner window, between the outer glass frame of the window glass and the water return part of the rail. Tighten the upper knob clockwise while pressing the glass frame. Instant purchase is okay. No price reduction, please. ★ Shipping will be via Rakuraku Mercari or Yuuyu Mercari. ★ Basically, it's on a first-come, first-served basis, so if someone else purchases it during the exchange of comments, it will go to the person who purchased it first. ★ I may not be able to reply to comments or greetings on weekends or at night, and it may be the next day. Thank you for your understanding. ★ I will send a greeting message after purchase (or after payment for ATM payments). Only a notification will be sent at the time of shipment. No reply is needed. ★ For used or defective items with major damage, size errors, or stains not described in the product description, for which I am at fault, I will definitely respond. Please contact me before rating. ★ No pets or smokers.