Yong'in eshiklari ramkalari ta'sir qilish reytinglari va eshiklarga tegishli tasniflashning ochilishiga ta'sir qilmaydi. Agar ramkadagi etiketka, agar ramkani yorliqlashda belgilab qo'ymasa, u ramka 3 soatdan kam bo'lgan narsa uchun baholanmasa, asosiy yong'in eshigi uchun bir soatlik reytinglar yo'q. If a frame bears a recognized label qualifying it as a fire door frame, it may support a 3-hour, a 1-1/2-hour, a 3/4-hour, or a 1/3-hour door. Frames used in masonry walls may be used with a maximum 3-hour fire door, while frames used in drywall walls are intended to be used with a maximum 1-1/2-hour fire door.
