คุณลักษณะ

• Wood plywood type.
• It is a type of inspection opening that uses the cut out floor material for the lid.
• It is a type for both reclining method and conventional method.
• The reclining method can be easily installed with a speed clipper that does not require screws.
• Conventional construction method uses outer frame receiving resin and does not require receiving.
• The outer frame and handle are airtight, and the airtightness is suitable for next-generation energy saving standards.
• Airtight performance is equivalent to JIS A4706 grade A-4.
• Adapted from AI-903 of the Urban Renaissance Agency.
• For inspection of underfloor wiring, piping, underfloor space, etc.
• For reclining method or conventional method.
• separate fare