Fireproof and airtight ceiling inspection opening [60-minute semi-fireproof structure, compatible with reinforced ceilings]
Ceiling inspection openings compatible with 60-minute semi-fireproof structures and reinforced ceilings that do not pose fire safety issues even when installed on fireproof covering lines [Special column now available].
■Ensuring the Continuity of Fireproof Coating The fireproof performance of our conventional products (made of aluminum) is approximately 28 minutes (based on our test values), so it is conceivable that continuity of fireproof coating cannot be ensured in quasi-fireproof structures or reinforced ceilings. By using a fireproof ceiling inspection opening, continuity of fireproof coating can be secured. ■Simplification of Construction To ensure the continuity of fireproof coating, there are cases where various methods are employed, such as installing a site-fabricated box-shaped fireproof coating above the ceiling inspection opening, but these measures can burden the site. This product eliminates the need for a box-shaped fireproof coating, leading to a reduction in on-site construction effort. ■Slimming Down the Visible Width for Aesthetic Appeal Compared to products compatible with 45-minute quasi-fireproof structures, the visible width has been made narrower, and the base material has been painted for a cleaner appearance. ■Consideration for Safety During Opening, Closing, and Inspections Since the ceiling materials for 60-minute quasi-fireproof structures or reinforced ceilings are heavier, a fall prevention chain is standardly equipped to prevent the lid from opening forcefully during inspections. ■Special Column Now Available by Mr. Noboru Yasui, Representative of Sakura Design Group, First-Class Architect Office "What are the important points regarding fireproof coating required for quasi-fireproof and fireproof buildings?" ↓Click the related link↓
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Please check the "corresponding notification specifications" listed in the catalog and use this product. *The fire resistance performance test is based on our company's testing. This product is not certified. It is a product that has demonstrated performance equivalent to 60 minutes of semi-fire resistance. <Main target buildings> 〇 Wooden three-story apartment buildings 〇 Wooden three-story schools 〇 Wooden non-residential buildings 〇 Properties using reinforced ceilings *Please use in accordance with various laws and regulations. 【Specifications】 Color: White Material: Frame/SGCC (hot-dip galvanized steel sheet) thermal expansion sheet Ceiling opening dimensions: 457×457mm Ceiling material cutting dimensions: 434×434mm Substrate material cross-section dimensions: 30×35mm or more Packaging: 1 unit/case List price: 29,800 yen/unit (excluding tax) Accessories: Mounting screws 1 bag (φ3.8×38mm 8 pieces)
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We listen to the voices from the field and develop and manufacture with free thinking. That is the motto of Joto's manufacturing. Joto's building materials are described as "unique," which means not just "interesting," but in its original sense of "one-of-a-kind" and "unmatched." By utilizing our original ideas and technologies, we create distinctive and unparalleled products that cannot be replicated by other companies, and we believe that contributing to the housing industry is our value. To make Japanese homes last longer and to ensure that people can live with peace of mind for years to come, Joto will continue to challenge itself with "unique" manufacturing as a housing material manufacturer.