This measurement will help you.
Installing an attic tent.
The attic tent is the ultimate attic access insulation cover ever invented attic stairs scuttle holes knee wall doors and full size doors its primary design is to stop air infiltration between the home and attic the most common medium for wasting costly residential energy during both hot and cold seasons.
Attic tents can vary in size but you do not need exact measurements in order to install them properly.
Next measure the access way you will need the inside width and length of rough frame.
Using roofing nails secure the base and seal the nails with roof cement source.
Use plastic roof cement to smooth the vent base and then place the base over the hole.
Installation process for a stair attic tent measure the distance and the height of the attic stairs start from above the frame.
Static vents often protrude from roofline thanks to.
Do it yourself.
To ensure an easy opening of the attic tent.
Due to their flexibility you have about a 2 3 margin of error.
Slip the top end of the flashing above the shingles directly over your hole allowing it to lap over the area below the hole.