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How to Measure & Install

Measuring at a Glance

  • Always use a metal tape measure
  • We require your measurements in millimetres
  • Measure every window, as they may have a slight variation that will effect your window furnishing from fitting perfectly

Measuring Instructions by Product

Professional Measuring and Installation

See if our professional measuring & installing is available in your area.


Measuring for Roller Blinds

Roller Blinds Face Mount Measurement Diagram

How to Measure For Face Mount

(for fitting your blind outside the window frame)
  • Measure the width from the outer edge of the architrave to the opposite edge.
  • Measure the drop from the top of the architrave to where you want the blind to finish.

If you do not have architraves (timber frame) around window

  • Measure the opening and add at least 100mm to allow the cloth to go past the opening. (100mm will give 35mm of cloth each side past the opening)
  • Measure the opening and add at least 100mm to the drop to allow the blind to be mounted above the opening.
Roller Blinds Recess Mount Measurement Diagram

How to Measure For Recess Mount

(for fitting your blind inside the window frame)
  • Measure the width from the inside of the window frame from left side to right side. Making sure to measure at the top of the reveal and not the bottom of the window, as this is where the brackets will be mounted.
  • Measure the drop from the top of the inside recess to the base of the inside sill.

Make sure you have enough depth to mount the blind inside the frame. 60mm will be sufficient. Less will result in the blind protruding out of the recess. Minimum depth required is 30mm.

Do not make any deductions as our factory will do this to ensure a perfect fit.

Measuring for Roman Blinds

Roman Blinds Measurement Diagram
  • Start by measuring the Width from the outer edge of the architrave to the opposite edge.
  • Measure the Drop from the top of the Architrave to the where you want the blind to finish.

    For shorter drop windows we recommend that you take the blind 50-100mm below the sill. Watch for any obstructions such as desk or bed.

    For full length windows we recommend that you measure to 20mm off the floor. This will give enough clearance and allow the blind to have room to settle overtime. For drops over 2410 we recommend 30mm clearance.
  • We recommend that you add 100-150mm to the drop of the blind, so you can mount the blind above the architrave to allow the pack to clear as much glass as possible when raised. This will allow more light into the room and is important when blinds are on doors, to allow for clearance.
  • We recommend that you add 40-100mm each side of the architrave. This will help reduce the gap at the side of the blind, providing better light control and more privacy.

IMPORTANT - We only recommend that Roman Blinds are Face Fitted and not Recessed inside the window. This is in accordance with the Australian Soft Furnishings Guidelines.

Measuring for Vertical Blinds

Vertical Blinds Face Mount Measurement Diagram

How to Measure For Face Mount

(for fitting your blind outside the window frame)
  • Measure the width from the outer edge of the architrave to the opposite edge.
  • Measure the drop from the top of the architrave to where you want the blind to finish. We recommend 10mm off the floor and 50-100mm below the frame.
  • We recommend that you take the track past the architrave each side. This will give more privacy and better light control. The distance you take the track is entirely optional. We highly recommend that you add at least 60-100mm. Make sure that you don't have any obstructions.
Vertical Blinds Recess Mount Measurement Diagram

How to Measure For Recess Mount

(inside the window frame)
  • Measure the width from the inside of the window frame from left side to right side. Making sure to measure at the top of the reveal and not the bottom of the window, as this is where the track will be mounted.
  • Measure the drop from the top of the inside recess to the base of the inside sill. Measure in 3 places Left, Centre and Right and take the smallest of the three measurements.

Depth Required: You will need a depth of 135mm for the blind to fit neatly inside the recess for 127mm slats and 97mm depth for 89mm slats. Minimum depth required for both slat sizes is 50mm. This will result in the blind slightly protruding out of the recess but will not detract from the product.

Important: Do not make any deductions as our factory will do this to ensure a perfect fit.

Measuring for 25mm Metal Blinds

25mm Metal Blinds Face Mount Measurement Diagram

How to Measure For Face Mount

(for fitting your blind outside the window frame)
  • Measure the Width from the outer edge of the architrave to the opposite edge.
  • Measure the Drop from the top of the architrave to where you want the blind to finish.

Important: If measuring to the top of a sill or to the floor, deduct 10mm from the drop so the base rail is free to rotate when closing the blind. (Drop to sill or floor - 10mm for clearance)

If you do not have architraves (timber frame) around window

  • Measure the opening and add at least 20mm to allow the blind to go past the opening (10mm each side).
  • Measure the opening from the top to where you want the blind to finish. Add at least 30mm to the drop to allow the blind to be mounted above the opening. If measuring to the floor, deduct 10mm so the base rail is free to rotate when closing the blind. (Drop to floor + 30mm for height - 10mm for clearance)
25mm Metal Blinds Recess Mount Measurement Diagram

How to Measure For Recess Mount

(for fitting your blind inside the window frame)
  • Measure the width from the inside of the window frame from left side to right side. Making sure to measure at the top of the reveal and not the bottom of the window, as this is where the brackets will be mounted.
  • Measure the drop from the top of the inside recess to the base of the inside sill.

You will only need a depth of 30mm for the blind to fit neatly inside the recess.

Important: Do not make any deductions as our factory will do this to ensure a perfect fit.

Measuring for 50mm Metal Blinds

50mm Metal Blinds Face Mount Measurement Diagram

How to Measure For Face Mount

(for fitting your blind outside the window frame)
  • Measure the Width from the outer edge of the architrave to the opposite edge.
  • Measure the Drop from the top of the architrave to where you want the blind to finish.

Important: If measuring to the top of a sill or to the floor, deduct 15mm from the drop so the base rail is free to rotate when closing the blind. (Measurement B - Drop to sill or floor - 15mm for clearance)

If you do not have architraves (timber frame) around window

  • Measure the opening and add at least 20mm to allow the blind to go past the opening (10mm each side). (Measurement A + 20mm)
  • Measure the opening from the top to where you want the blind to finish. Add at least 50mm to the drop to allow the blind to be mounted above the opening. If measuring to the floor, deduct 15mm so the base rail is free to rotate when closing the blind. (Measurement B + 50mm for height - 15mm for clearance)
50mm Metal Blinds Recess Mount Measurement Diagram

How to Measure For Recess Mount

(for fitting your blind inside the window frame)
  • Measure the width from the inside of the window frame from left side to right side. Making sure to measure at the top of the reveal and not the bottom of the window, as this is where the brackets will be mounted.
  • Measure the drop from the top of the inside recess to the base of the inside sill.

Depth Required: You will need a depth of 70mm for the blind to fit neatly inside the recess. The minimum depth required is 30mm, this will result in blind slightly protruding out of the recess but not effecting the ascetics of the product.

Important: Do not make any deductions as our factory will do this to ensure a perfect fit.

Measuring for Basswood & Timberlook Blinds

Timber Venetian Blinds Face Mount Measurement Diagram

How to Measure For Face Mount

(for fitting your blind outside the window frame)
  • Measure the Width from the outer edge of the architrave to the opposite edge.
  • Measure the Drop from the top of the architrave to where you want the blind to finish.

Important: If measuring to the top of a sill or to the floor, deduct 15mm from the drop so the base rail is free to rotate when closing the blind. (Measurement B - Drop to sill or floor - 15mm for clearance)

If you do not have architraves (timber frame) around window

  • Measure the opening and add at least 20mm to allow the blind to go past the opening (10mm each side). (Measurement A + 20mm)
  • Measure the opening from the top to where you want the blind to finish. Add at least 50mm to the drop to allow the blind to be mounted above the opening. If measuring to the floor, deduct 15mm so the base rail is free to rotate when closing the blind. (Measurement B + 50mm for height - 15mm for clearance)
Timber Venetian Blinds Recess Mount Measurement Diagram

How to Measure For Recess Mount

(for fitting your blind inside the window frame)
  • Measure the width from the inside of the window frame from left side to right side. Making sure to measure at the top of the reveal and not the bottom of the window, as this is where the brackets will be mounted.
  • Measure the drop from the top of the inside recess to the base of the inside sill.

Depth Required: You will need a depth of 65mm for the blind to fit neatly inside the recess. With the Valance a total of 80mm. The minimum depth required for fixing the screws is 45mm, this will result in blind slightly protruding out of the recess but not effecting the ascetics of the product.

Important: Do not make any deductions as our factory will do this to ensure a perfect fit.

Measuring for Honeycomb Blinds

Honeycomb Face Mount Measurement Diagram

How to Measure For Face Mount

(for fitting your blind outside the window frame)
  • Measure the width from the outer edge of the architrave to the opposite edge. Make sure to do this at the top of the window where the blind will be mounted.
  • Measure the drop from the top of the architrave to where you want the blind to finish. Repeat this across the window and take the smallest of the three measurements.

If you do not have architraves (timber frame) around window

  • Measure the opening and add at least 50mm to allow the cloth to go past the opening.
  • Measure the opening and add at least 50mm to the drop to allow the blind to be mounted above the opening.
Honeycomb Recess Mount Measurement Diagram

How to Measure For Recess Mount

(for fitting your blind inside the window frame)
  • Measure the width from the inside of the window frame from left side to right side. Making sure to measure at the top of the reveal and not the bottom of the window, as this is where the brackets will be mounted.
  • Measure the drop from the top of the inside recess to the base of the inside sill. Repeat across the window and take the smallest of the three measurements.

Make sure you have enough depth to mount the blind inside the frame. 50mm’s will be sufficient. Less will result in the blind protruding out of the recess. Minimum depth required is 30mm.

Do not make any deductions as our factory will do this to ensure a perfect fit.

Measuring for Drapes

Drapes Measurement Diagram

Measuring for drape width & drop

The width is easily measured by providing us with the track size you require. You can take the track past the architraves as much as you like for better light control & clearance of windows when drapes are open.

Handy Hint - Try entering small variations to your widths at our website, as you might find the price reduces due to the amount of drops to the fabric required. So altering your measurement by a few millimetres may show a price reduction.

Drapes look best hung to the floor, alternatively you can hang them to the sill or below the sill for shorter windows.

  • Measure to the floor
  • Measure 100-150mm below the sill (watch out for obstructions such as desk or toy box)
  • Measure to the sill Our hooks will lift the drapes above the track allowing the drape to hang neatly just above the floor or sill, eliminating the chance of it dragging.
  • Eyelet & Tab Top Drapes are mounted above the architrave. Add 100mm to measurement A, B, or C to allow for the Tab & Eyelet to clear the glass.

Always measure the drop in 3 places across the window to ensure the window is level. Measure Right, Centre & Left hand side and use the shortest of the 3 measures. This is for Measurement A & C lengths only (floor or sill).


Measuring for drapes using existing track or pole

One Way Track Drapes Measurement Diagram
For one way tracks measure A + B = Total Drape Width
Two Way Track Drapes Measurement Diagram
For 2 way track with centre overlap measure A + B + C + D = Total Drape Width
Rod Drapes Measurement Diagram
For Rods measure between the decorative ends

Measuring drape drops for certain header types for existing rods & tracks

Tab Top Heading

Tab Top headings have a 100mm long tab which is included in the curtain drop and are suitable for poles up to 45mm in diameter.

Measure from the top of the pole to the floor, sill or below the sill.

By adding the drape to your rod, it will automatically lift it off the floor or above your sill. Don't make any deductions.

Tab Top Drapes Measurement Diagram

Eyelet Heading

The eyelet will fit rods up to 30mm in diameter. The inner edge of the eyelet is set down 30mm from the top of the drape.

Measure from the top of the rod to the floor, sill or below the sill as shown in the diagram above and then add 30mm to your drop.

Eyelet Drapes Measurement Diagram

Pinch Pleat, Inverted Pleat & Pencil Pleat Headings

Pinch Pleat Drapes Measurement Diagram

When using a existing curtain track, measure from the top of the track to the floor, sill or below as shown in the above drop diagram.

Drapes on a Curtain Rod with Rings Measurement Diagram

When using a curtain rod, measure from the underside of the decorative ring where the drape hooks into. Then measure, to floor, sill or below sill as shown in diagram above.


Measuring for Valances on existing track

Valance On Existing Track Measurement Diagram

Measure the Valance rail width (not the drape track). This is normally wider than the drape track.

Measure A + B + C = Total Valance Width

Measuring for Pelmets & Valances

Pelmets & Valances Measurement Diagram

Points to Know

  • Pelmets & Valances generally go past the architraves either side.
  • You will need to make the width 40mm wider than the product you are covering (20mm each side)
  • The measurement we refer to is always the inside box width (IBM)
  • The projection is the distance the Pelmet or Valance will come out from the wall
  • The Fascia size is the height of the Pelmet face

View the specifications of each individual product at our website for further details on projection, fascia etc. You will also find details of sizes to order to cover specific products, such as curtains, roller blinds and more.

Measuring for Soft Valance on existing Valance Rod

Soft Valance on Existing Valance Rod Measurement Diagram

A + B + C = Valance size

Measuring for Roller Blind Valances

Roller Blind Valances Face Mount Measurement Diagram

How to Measure For Face Mount (architrave)

  • We recommend that you allow your Valance to go past your Roller Blind at least 20mm each side. So add 40mm to your total blind width (bracket to bracket).
  • The Valance needs to go past the architraves for the returns to fit neatly against the plaster.

We supply a standard return size which is suitable for most window applications, however if you have a older style window please request a larger return that you can cut down to suit.

How to Measure For Recess Mount (inside frame)

Roller Blind Valances Recess Mount Measurement Diagram

The secret to a perfect fitting recessed Valance is to measure slightly beyond the recess, to a point called the Quark.

The Quark is the small lip before the architrave begins.

  • Recess Measuring point for blinds
  • Quark Measuring point for Valances

It is not essential to measure to the Quark, but will give a more professional fit for your valance.

Recessed Roller Valances are not suitable if your blinds project out of the recess due to lack of depth for mounting (60mm for your blind to fit neatly inside the frame).


For further assistance contact our customer service team
Ph: 1300 761 179 Monday to Friday 9am to 5pm
Blindsonline.com.au