In a chimney flue, a damper closes off the flue to keep the weather (and birds and other animals) out and warm or cool air in. This is usually done in the summer, but also sometimes in the winter between uses. In some cases, the damper may also be partly closed to help control the rate of combustion.
A little more detail will help us answer your question. If your snacks are pretzels, potato chips, dried fruit or other dry goods, you can take them in your carry-on or checked bag. Snack items that are liquids or gels, like pudding, jello or yogurt, etc., falls under the 3-1-1 rules for liquids for carry-on bags. They can be transported in checked bags.
Other items you may bring on board. Here are examples of items you can bring on board in addition to your carry-on allowance: 1  Coat or other outer garment, 2  Small purse measuring no more than 25cm x 30cm x 14cm (10in x 12in x 5.5 in). 3  Larger purses will be included in your carry-on allowance.4  Infant care item (e.g. diaper bag),ere are examples of items you can bring on board in addition to your carry-on allowance: 1  Coat or other outer garment, 2  Small purse measuring no more than 25cm x 30cm x 14cm (10in x 12in x 5.5 in).