Fireproof and high airtight ceiling inspection opening [45-minute semi-fireproof structure compatible product]

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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