Our dust mite covers come in four depths: 9″ deep, 12″ deep, 15″ deep, and 18″ deep. Queen and King sizes are available in an 18″ deep version. Any extra fabric can be easily and harmlessly tucked in-between your mattress and the box spring.
How to Measure Mattress Depth: 
- Remove comforter, blankets, sheets, and mattress pad
- Use a tape measure or ruler to measure mattress depth from seam to seam.
- If the mattress has a sewn in pillow top, measure in several places to get an accurate measurement.
How to Measure Mattress and Box Spring Size:
- Remove comforter, blankets, sheets, and mattress pad
- Measure the length and width of the mattress with a tape measure or yard stick.
| Mattress Size | Dimensions | Metric Dimensions |
|---|---|---|
| Twin | 39″ x 75″ | 99 cm x 191 cm |
| Long Twin | 39″x 80″ | 99 cm x 203 cm |
| Full | 54″ x 75″ | 137 cm x 191 cm |
| Queen | 60″ x 80″ | 152 cm x 203 cm |
| King | 78″ x 80″ | 198 cm x 203 cm |
| CA King | 72″ x 84″ | 183 cm x 214 cm |