Measuring For Inside Mount Blinds
To Find Width
Measure the opening across the top, where the headrail is to be installed, from inside of window frame on left to inside of window frame on right. Round the measurement down to the nearest 1/8". A minimum depth of 2 1/2" is needed to install inside the window.
To Find Height
Measure from the inside top of the opening on the left, at the center, and on the right to the sill; to the closest 1/8" and note the smallest dimension.
Do not make any allowances: adjustments will automatically be made so the headrail will fit the opening properly and the vanes will clear the sill by 1/4" to 1/2".
Measuring For Outside Mount Blinds
To Find Width
Measure the width of the area to be covered at the place where the headrail will be installed to the nearest 1/8". Blind should overlap opening at least 4" on each side to ensure privacy. To maintain maximum view, allow adequate overlap and consider the stack width.
To Find Height
Measure the height of the area to be covered and round down to the nearest 1/8". Blind should extend at least 3" above and 3" below opening or window moulding.
For installations to the floor, deduct 1/2" from the shortest height for proper clearance.
Specifying outside mount measurement means the factory makes allowances for headrail deductions only.
Notes
- Blinds installed on windows near wall or baseboard heaters must clear the heaters by 12" above and 6" to the side.
- Make sure there are no obstructions on either side of the window that may prevent you from ordering a wider blind.
- Measure the area to the left and right of each window from the frame to the nearest obstruction (e.g. corner, fireplace, corner window, bookcases).
Measuring For Patio Doors
To Find Width
Measure the width of the area to be covered at the place where the headrail will be installed to the nearest 1/8". Blind should overlap opening at least 4" on each side to ensure privacy. To ensure easy access through the door and allow adequate overlap, consider the stack width.
To Find Height
Measure the height of the area to be covered at the left, center, and right and round down to the nearest 1/8". Blind should extend at least 3" above opening or window moulding.
To ensure easy access through the door and allow adequate overlap, consider the stack width.
For installations to the floor, deduct 1/2" from the shortest height for proper clearance.
Specifying outside mount measurement means the factory makes allowances for headrail deductions only.
Vane Count and Stacking Chart
To Use This Chart:
Use the appropriate column for One Way or Split Draw blinds. Find the width that you need to clear under the column marked "Clear Opening." Order the blind size listed at the far left. Split Draw blinds must have an even number of vanes.
| One Way | Dual Draw | |||||
|---|---|---|---|---|---|---|
| Blind Width | No. of Vanes | Stack Width | Clear Opening | No. of Vanes | Stack Width | Clear Opening |
| 13-1/8" | 4 | 3-7/8" | 9-1/4" | -- | -- | -- |
| 16-1/4" | 5 | 4-1/8" | 12-1/8" | -- | -- | -- |
| 19-3/8" | 6 | 4-1/2" | 15" | -- | -- | -- |
| 22-1/2" | 7 | 4-3/4" | 17-3/4" | -- | -- | -- |
| 25-5/8" | 8 | 5-1/8" | 20-1/2" | 8 | 3-7/8" | 18" |
| 28-3/4" | 9 | 5-1/2" | 23-1/4" | -- | -- | -- |
| 31-7/8" | 10 | 5-3/4" | 26" | 10 | 4-1/8" | 23-5/8" |
| 35" | 11 | 6-1/8" | 28-7/8" | -- | -- | -- |
| 38-1/8" | 12 | 6-1/2" | 31-5/8" | 12 | 4-1/2" | 29" |
| 41-1/4" | 13 | 6-3/4" | 34-1/2" | -- | -- | -- |
| 44-3/8" | 14 | 7-1/8" | 37-1/4" | 14 | 4-3/4" | 34-3/4" |
| 47-1/2" | 15 | 7-1/2" | 40" | -- | -- | -- |
| 50-5/8" | 16 | 7-3/4" | 42-3/4" | 16 | 5-1/4" | 40-3/8" |
| 53-3/4" | 17 | 8-1/8" | 45-5/8" | -- | -- | -- |
| 56-7/8" | 18 | 8-1/2" | 48-3/8" | 18 | 5-1/2" | 46" |
| 60" | 19 | 8-3/4" | 51-1/4" | -- | -- | -- |
| 63-1/8" | 20 | 9-1/8" | 54" | 20 | 5-3/4" | 51-1/2" |
| 66-1/4" | 21 | 9-3/8" | 56-7/8" | -- | -- | -- |
| 69-3/8" | 22 | 9-3/4" | 59-5/8" | 22 | 6-1/8" | 57" |
| 72-1/2" | 23 | 10-1/8" | 62-3/8" | -- | -- | -- |
| 75-5/8" | 24 | 10-3/8" | 65-1/4" | 24 | 6-1/2" | 62-3/4" |
| 78-3/4" | 25 | 10-3/4" | 68" | -- | -- | -- |
| 81-7/8" | 26 | 11-1/8" | 70-3/4" | 26 | 6-3/4" | 68-1/4" |
| 85" | 27 | 11-3/8" | 73-1/2" | -- | -- | -- |
| 88-1/8" | 28 | 11-3/4" | 76-3/8" | 28 | 7-1/8" | 74" |
| 91-1/4" | 29 | 12-1/8" | 79-1/8" | -- | -- | -- |
| 94-3/8" | 30 | 12-3/8" | 82" | 30 | 7-1/2" | 79-1/2" |
| 97-1/2" | 31 | 12-3/4" | 84-3/4" | -- | -- | -- |
| 100-5/8" | 32 | 13" | 87-5/8" | 32 | 7-3/4" | 85-1/8" |
| 103-3/4" | 33 | 13-3/8" | 90-1/4" | -- | -- | -- |
| 106-7/8" | 34 | 13-3/4" | 93" | 34 | 8" | 90-5/8" |
| 110" | 35 | 14" | 96" | -- | -- | -- |
| 113-1/8" | 36 | 14-3/8" | 98-3/4" | 36 | 8-1/2" | 96-1/4" |
| 116-1/4" | 37 | 14-3/4" | 101-1/2" | -- | -- | -- |
| 119-3/8" | 38 | 15" | 104-3/8" | 38 | 8-3/4" | 101-7/8" |
| 122-1/2" | 39 | 15-3/8" | 107-1/8" | -- | -- | -- |
| 125-5/8" | 40 | 15-3/4" | 110" | 40 | 9-1/8" | 107-3/8" |
| 128-3/4" | 41 | 16" | 112-3/4" | -- | -- | -- |
| 131-7/8" | 42 | 16-3/8" | 115-1/2" | 42 | 9-3/8" | 113" |
| 135" | 43 | 16-3/4" | 118-1/2" | -- | -- | -- |
| 138-1/8" | 44 | 17" | 121" | 44 | 9-3/4" | 118-5/8" |
| 141-1/4" | 45 | 17-3/8" | 123-7/8" | -- | -- | -- |
| 144-3/8" | 46 | 17-5/8" | 126-1/2" | 46 | 10" | 124-1/4" |
| 147-1/2" | 47 | 18" | 129-1/2" | -- | -- | -- |
| 150-5/8" | 48 | 18-3/8" | 132-1/4" | 48 | 10-3/8" | 129-3/4" |
| 153-3/4" | 49 | 18-5/8" | 135-1/8" | -- | -- | -- |
| 156-7/8" | 50 | 19" | 138" | 50 | 10-3/4" | 135-3/8" |
| 160" | 51 | 19-3/8" | 140-5/8" | -- | -- | -- |
| 163-1/8" | 52 | 19-5/8" | 143-1/2" | 52 | 11-1/8" | 141" |
| 166-1/4" | 53 | 20" | 146-1/4" | -- | -- | -- |
| 169-3/8" | 54 | 20-3/8" | 149" | 54 | 11-1/2" | 146-1/2" |
| 172-1/2" | 55 | 20-5/8" | 151-7/8" | -- | -- | -- |
| 175-5/8" | 56 | 21" | 154-3/4" | 56 | 11-3/4" | 152-1/8" |
| 178-3/4" | 57 | 21-1/4" | 157-1/2" | -- | -- | -- |
| 181-7/8" | 58 | 21-5/8" | 160-1/4" | 58 | 12-1/8" | 157-1/2" |
| 185" | 59 | 22" | 163" | -- | -- | -- |
| 188-3/8" | 60 | 22-1/4" | 165-7/8" | 60 | 12-3/8" | 163-3/8" |