Unfortunately, bathroom ventilation fans often are set up so that they exhaust air to the space between ceiling joists, especially if the bath is located on a lower level toward the middle of the house.
The United States Postal Service defines a postcard as: rectangular, at least 3 1â2 inches (88.9 mm) high Ã 5 inches (127 mm) long Ã 0.007 inches (0.178 mm) thick and no more than 4 1â4 inches (108 mm) high Ã 6 inches (152.4 mm) long Ã 0.016 inches (0.406 mm) thick.
Jumbo Postcards-oversized postcards can measure up to 6ââ³ x 11Â½,â³ but the postage required is the standard letter rate of 49Â¢. The paper thickness of a postcard over 4Â¼â³ x 6â³ postcard must be at least 0.009â³ and not more than 0.25â³ in thickness.