Features: Compatible with four types of fire-resistant divisions: concrete walls/floors, ALC walls/floors, hollow walls, and single walls. The heat-expanding putty is less likely to harden even when stored at low temperatures, allowing for immediate application without warming. We have adopted heat-expanding putty in an easy-to-apply sheet form that can be torn or wrapped. Even in the case of hollow walls and single walls, there is no need to fill the opening with heat-expanding putty. Ceramic wool is attached to the inside of the metal cap, reducing the amount of heat-expanding putty required and shortening work time. Hard PVC pipes with condensation prevention layers can be used. Accessories: Metal caps x 1 set, heat-expanding putty x 4 sheets, hollow wall fixing brackets x 2, gypsum board screws (M5 x 40mm) x 4, concrete/ALC screws (M4 x 32mm) x 2, construction method label x 1, installation manual Brand new, unused. Also listed on other sites. Thank you.