Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to install a chimney liner [title] Inspect the chimney. [step] Use a light source on a string (or an inspection camera if you have one) to look for bends, or restrictions that could interfere with pulling the liner through. [title] Determine the correct diameter of the liner.

Ending1: [step] Though older models will require the liner to be 48 inches (61 cm) the smaller the diameter, larger models are generally larger. Solid liners for chimneys take around 48 inches (61 cm) and include screws, nails, and nuts. Ending2: [step] If for a wood stove/insert, consult the owners manual for proper sizing. For an open fireplace, look for a chart or calculator online. Ending3: [step] The diameter of your liner will depend on its thickness. Most lamps have an 8 inch (22.86 cm) diameter, whereas larger portable generators may have a 2 inch (5.08 cm) diameter. Ending4: [step] Chimney liners fall into several categories. Be aware that each type of chimney liner has a rectangular and oval shape.

Answer format: ending1/ending2/ending3/ending4