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Important Measurement Notes
Headrail Width
The width you enter when ordering your shade is the width of the headrail - the top bar of the shade or blind that mounts to your wall or window frame.
Deductions
Some headrail widths have an automatic measurement deduction (honeycomb and wood blinds). DO NOT apply deductions yourself, this will be done automatically.
The fabric panel or wood slats are slightly narrower than the headrail, creating a small space on each side, this is know as a Light Gap.
Roller Shade
Inside Mount
| Measurement | Deduction | Light Gap |
|---|---|---|
| Headrail | None | None |
| Fabric | 1.5 in. | 3/4 in. per side |
Outside Mount
| Measurement | Deduction | Light Gap |
|---|---|---|
| Headrail | None | None |
| Fabric | 1.5 in. | 3/4 in. per side |
Honeycomb
Inside Mount
| Measurement | Deduction | Light Gap |
|---|---|---|
| Headrail | 1/4 in. | 1/8 in. per side |
| Fabric | 3/8 in. | 3/16 in. per side |
Outside Mount
| Measurement | Deduction | Light Gap |
|---|---|---|
| Headrail | None | None |
| Fabric | 1/8 in. | 1/16 in. per side |
Wood Blinds
Inside Mount
| Measurement | Deduction | Light Gap |
|---|---|---|
| Headrail | 1/2 in. | 1/4 in. per side |
| Wood Slats | 1/2 in. | 1/4 in. per side |
Outside Mount
| Measurement | Deduction | Light Gap |
|---|---|---|
| Headrail | None | None |
| Wood Slats | None | None |
