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DIY Help Centre

Double Sliding Doors Frequently Asked Questions

Q. Do you install?

A. Yes. Seconline is part of a larger wholesale manufacturing network with resellers throughout Australia! If you would prefer to have your products measured and installed by a trained industry professional we can arrange a free measure and quote. Send us an inquiry today!

Q. What are the recommended measuring deductions for Double Sliding Doors?

A. We can only advise as to the standard allowances; some doors may have individual quirks. If you are measuring an existing set of double sliding screen doors the allowances will already have been made so just enter the exact measurements from these doors. If you are measuring for a new set of double sliding screen doors our Product Builder will guide you through how to measure off the sliding door tracks, and it will make the deductions for you. The measurements you provide will be the exact measurements your door will be fabricated. Please check your tape for accuracy.

Note: Measure your door from the outside looking in. Standard drop/height deduction is 12 mm, this is the amount of adjustment in the rollers. Standard width deduction for the overall width is 6 mm.

Q. How do I work out which is the "Active Door"?

A. Stand outside with your glass doors closed; identify which door will have the lock, left or right, this is the active door.

Q. What are interlocks and do I need them?

A. Yes. Double sliding screen doors must have interlocks. The purpose of interlocks is to lock the back of the sliding door into the fixed panel simultaneously as the doors are locked together, this ensures that the doors are locked on both sides. A frame interlock is supplied with all security screen doors and is fitting during installation. Most glass doors will have a receiving interlock located on the fixed glass panel (1.4).

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There are three different sized receiving interlocks:

  • 3 mm offset interlock

  • 7 mm offset interlock

  • Flat interlock

Q. What if my door does not have a receiving interlock?

A. You must purchaseand fit receiving interlocks, they can be found in the list of Addons at Step 3 of the Product builder.

Use the following guide to identify the receiving interlock you require:

  • If the distance from the centre of the top and bottom track to the face edge of the fixed glass panel is greater than 20 mm then a 7 mm offset interlock is required.

  • If the distance from the centre of the top and bottom track to the face edge of the fixed glass panel is less than 20 mm and greater than 16 mm then a 3 mm offset interlock is required.

  • If the distance from the centre of the top and bottom track to the face edge of the fixed glass panel is less than 16 mm then a flat interlock is required - 10 mm must be added to the width of each screen door for this interlock selection.

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Q. Why do you need a centre of the door handle height?

A. To manufacture your door with the handle compatible with your existing handle for both sliding and hinged doors.

Q. How far above or below our existing solid door handle do we put our required handle height?

A. This measurement needs to be a minimum of 120 mm above the top of your existing solid door lock or 60 mm below the bottom of your existing door lock handle.

Q. Do you have a showroom that I can visit?

A. Yes we do. We are located at 1/38 Kalaroo Road, Redhead or please refer to our photo Gallery.

Q. What powder Coat colours do you use?

A. Colours are standard Interpon and Dulux Powder Coat colours.

Q. Can I have another Colour if I am willing to pay for it?

A. Yes. We powder coat non-standard colours for all our security screen doors and window screens (this does not include Diamond + Fly or Fly screen products). Select the "Non-Standard Colour" option from the colour selector page then find your required colour from the Dulux colour chart; enter the name and code in the field provided.

Q. Do you do security window screens?

A. Yes, we sell 316 marine grade stainless steel mesh security window screens.

Q. How does your door compare with other similar doors?

A. We offer no comparisons to any other similar products. Our doors are as described. We stand by our quality, service and warranties as described.

Q. How long does it take?

A. The door is manufactured within 10 - 15 working days from receiving your measurements. Shipment usually takes one to four days. Once goods are dispatched with Regional Road Express you will be sent a dispatch notification.

Q. Can I pick the door up?

A. If you live locally yes, otherwise we ship Australia wide. We are in Newcastle NSW.

Q. Do you discount for multiple doors?

A. No, however we can discount freight for multiple items.

Q. Can multiple doors be made keyed alike?

A. Yes, in lots of ten.

Q. Can the door be made out of square?

A. No.

Q. What is the size of the door frame?

A. The depth of the frame is 20mm, the width of the face is 70 mm.

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