You can fill out the following form or send us an email to [email protected] to get our quotation about the price and supply period of Rittal SK 5050.701 SK Adaptor for roof mounted fan, , WxD 515x300mm, cutout WxD 258x258mm, for old cutout: WxD 475x260mm, for old roof mounted fan: 3149410, 3149420, 3149440, product. As soon as possible we will provide you with best price and delivery time offer.