Delivery Charges Orders over £75.00 incl VAT are delivered free of charge to most UK mainland addresses. Under £75.00 the charge is £8.95 including VAT. For Northern Ireland, Highlands, certain Scottish postcodes and off-shore islands a fixed delivery charge of £15.00 incl VAT applies. For the Isle of Wight and Channel Islands a fixed charge of £20.00 incl VAT applies. Regrettably, we are unable to deliver to Republic of Ireland
The carpet threshold Double Z9 delivers quality and style
Choose from 10 finishes to complement your carpet
The carpet to carpet threshold Double Z9 is an elegant and secure way to join a carpet to another carpet in a doorway. Unlike carpet door bars you can buy at the DIY shops, these are made to last, will not easily scuff or dent and will look the part for years to come.
Likewise suited to joining a carpet to a hard floorcovering by removing one base section – see the Premier Z9 for more information..
The Double Z9 are designed to take a quality carpet up to around 12mm thick or pile height (excluding the underlay).
The two floors should be level with each other for the Double Z9 (otherwise known as ZZ9 or double naplocks) to lie flat. However, if yours are slightly different, stack 3mm thick MDF strips, underneath.
If one of your carpets needs to be raised up to the level of the pins, buy the Easyshims to create a ramp.
Manufactured with a solid brass bar and rounded edges, in a choice of 10 pristine, metal finishes.
Available in 4 alternative lengths which are suitable for cutting to length: 900mm, 1000mm, 1800mm and 2700mm.
Width options
The visible bar or top of these Double Naplocks is 30mm (just over 1″) wide and approximately 4mm thick.
Fitting tips for the carpet to carpet threshold Double Z9
Cut to length with a sharp hack-saw.
Stick, using a propriety adhesive, nail or screw (avoiding any underfloor heating).
For images and information on how to convert the Double Z9 so as to be able to join a hard floor, such as ceramic tiles or wood, to a carpet, please see the Premier Z.
Note: any underlay stops short of the door threshold.
Once fitted, the Double Z9 can be ‘napped down’ with a carpeted wood block, which will give the carpet an extra firm grip on the pins and can reduce the height by 3mm.
Please click on the Fitting Video below for fitting tips from a professional fitter.
Premier Double Z9 shown in satin nickelThe 30mm wide carpet to carpet threshold Double Z9 is available in 10 different finishes
Co-ordinating door bars and flooring trims in this range
We sell a choice of 4 brands of door thresholds and floor trims: Premier, Feline, Ali and AL. Each brand has its own selection of unique styles and finishes. We therefore recommend you choose from the same range if you wish them to complement each other. You can do a search by selecting the relevant range name from the list of options shown under “TYPE” (left of web page).
Looking after & cleaning door thresholds
This product is made of solid brass and hand-finished and therefore the finish may vary slightly from batch to batch. To achieve an authentic look and withstand daily use, they are unlacquered and therefore may age naturally over time, depending on their environment. Please see our How to Guide: Cleaning Door Thresholds
We offer free delivery for many of our products, including door thresholds and stair rods, dependent on your postcode.
Orders over £75.00 in value are delivered free of charge to most UK mainland addresses. Under £75.00 the charge is £8.95 including VAT.
For Northern Ireland, the Highlands and certain Scottish postcodes and off-shore islands a fixed delivery charge of £15.00 including VAT is charged. For the Isle of Man and Channel Islands a fixed charge of £20.00 including VAT is charged.
Regrettably, we are unable to ship overseas, including Republic of Ireland.
The products we sell are high quality and many are made-to-order and hand finished. Please check below or on the product pages for standard lead times.
When you place your order online, you will immediately receive an automated payment confirmation. Your order will be processed and confirmed by our customer service department via email the next working day (9am-5pm). In order to get your order to you as quickly as possible, we ship direct from the manufacturers to your delivery address using DHL/UK Mail. We will email you your parcel tracking details once your order has left the factory.
Door thresholds & trims
All our door thresholds, stair nosings & matwell trims in all finishes, excluding those listed below : approximately 4-6 working days
Ali range: approximately 3-5 working days
Feline range, SSEP & AC38: : 5+ working days (exact delivery advised at time of order confirmation)
AL/range: 3+ working days (exact delivery advised at time of order confirmation)
Carpet binding
Easybind, Easybind installation kit: approximately 3-4 working days
Accessories
Carpet Studs, Easyshims, Pipe Collars, Skiffers: approximately 3-4 working days
Working days: Monday to Friday 9am -5pm. We close on bank holidays.
2 reviews for Premier Double Z9
Rated 5 out of 5
william burrows (verified owner)–
Really fine quality product. Beautifully finished and engineered. Prompt and well packed delivery.
Rated 5 out of 5
Dan –
Great products and fast delivery! I would highly recommend CarpetRunners.co.uk. Thanks again
Have you ever thought a product you chose on a website doesn’t look the same colour in reality? A prime reason is that computer and mobile screens, operating systems and even web browsers have different colour characteristics, this therefore affects the colours you see on your screen(s). We therefore cannot guarantee that your screen accurately reflects that of the products.
The high quality range of Premier door thresholds are mostly made from solid brass and offered in a choice of 10 different finishes. These options are achieved using a variety of manufacturing processes, including powder coating, plating, polishing and chemical antiquing and are hand-finished. Therefore, any given finish may vary slightly from batch to batch and compared to any given sample.
All the Premier door thresholds are supplied non lacquered. Information about cleaning them is available here.
0330 113 4909 
william burrows (verified owner) –
Really fine quality product. Beautifully finished and engineered. Prompt and well packed delivery.
Dan –
Great products and fast delivery! I would highly recommend CarpetRunners.co.uk. Thanks again