Sandwich Observation Doors provide easy access into air ducts and units and allow for viewing the inside of the duct. This door was developed to provide a solid, leak proof door that is simple to install.
Access door which allows inspection of the inside of the duct without door removal.
- 4” x 2-5/8” viewport
- Safety glass used for window
- Tested to 20” w.g. with no leakage noted
- Tested to negative 10” w.g. with no leakage noted
- No frame to install
- Effortless opening and closing (no tools required)
- No measuring (self-adhesive template provided)