Fireproof and high airtight ceiling inspection opening [45-minute semi-fireproof structure compatible product]
SPC-F4545-J45
Ceiling inspection openings with a 45-minute semi-fire-resistant structure 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 (according to our test values), which may not ensure the continuity of fireproof coating in quasi-fireproof structures or reinforced ceilings. By using a fireproof ceiling inspection opening, continuity of the fireproof coating can be ensured. ■Simplification of Construction To ensure the continuity of fireproof coating, there are cases where various methods are employed, such as providing a site-manufactured box-shaped fireproof coating above the ceiling inspection opening. However, the measures for fireproof coating have become a burden on the site. This product eliminates the need for a box-shaped fireproof coating, leading to a reduction in on-site construction effort. ■Ensuring High Airtightness By providing a recess to maintain the elasticity of the airtight material. It has high airtight performance equivalent to JIS A 4706 (sash) airtightness grade A4 (according to our test values). ■Special Column Published by Noboru Yasui, Representative of Sakura Design Group First-Class Architect Office "What are the precautions for fireproof coating required in quasi-fireproof and fireproof buildings?" ↓Click the related link↓
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When using in a 45-minute fire-resistant structure, please use ceiling materials that comply with the specifications of the notification (*). * Notification No. 1358, Article 3, Item 3 of the Ministry of Construction, Heisei 12. The fire performance test results are based on our company's testing. This product is not certified. <Main target buildings> 〇 Wooden single-family houses 〇 Wooden two-story apartment buildings 〇 Wooden non-residential buildings * Please use in accordance with various laws and regulations. 【Specifications】 Color: White Material: Decorative frame: ABS, Frame: SGCC (hot-dip galvanized steel plate) thermal expansion sheet Ceiling opening dimensions: 457×457mm Ceiling material cutting dimensions: 418×418mm Substrate material cross-section dimensions: 45×45mm or more Packaging: 1 unit/case List price: 21,600 yen/unit (excluding tax) Accessories: Installation screws (φ3.8×38mm, 8 pieces) per bag
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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 "unparalleled." We believe that our value lies in creating distinctive and unique products that cannot be replicated by others, utilizing our original ideas and technologies, and contributing to the housing industry. To make Japanese homes last longer and ensure that people can live with peace of mind for years to come. As a housing material manufacturer, Joto will continue to challenge itself with "unique" manufacturing.