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We are closed from 2:00 pm, Dec 18 2025, and reopen Jan 12 2026. Online orders placed between these dates will be received and queued upon our return. Happy holidays!

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Plaster Arch Keystones

See our range of Arch Keystones

View ARCH KEYSTONES ONLINE CATALOGUE

K1
K1
K1
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$70.40 ea.
ARCH KEYSTONE Width - 170mm Height -215mm Depth - 60mm Suits Arch Profile 140mm.
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K2
K2
K2
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$54.30 ea.
ARCH KEYSTONE Width - 105mm Height -245mm Depth - 20mm Suits AR69 Ceiling Strip Set.
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K3
K3
K3
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$108.60 ea.
ARCH KEYSTONE Width - 210mm Height -225mm Depth - 100mm Suits Arch Profile 140mm.
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K4
K4
K4
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$123.20 ea.
ARCH KEYSTONE Width - 180mm Height -260mm Depth - 100mm Suits Arch Profile 230mm.
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K5
K5
K5
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$159.70 ea.
ARCH KEYSTONE Width - 170mm Height -310mm Depth - 90mm Suits Arch Profile 280mm.
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K7
K7
K7
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$82.30 ea.
ARCH KEYSTONE Width - 120mm Height -100mm Depth - 35mm Suits Arches CA1 and CA2.
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K8
K8
K8
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$82.30 ea.
ARCH KEYSTONE Width - 105mm Height -85mm Depth - 35mm Suits Robe Arch AR1 and Robe Arch AR2.
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K9
K9
K9
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$98.80 ea
ARCH KEYSTONE Width - 120mm Height -125mm Depth - 60mm Suits AE1,AE2,AE3,AE4 & ASE1 ARCHWAYS.
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K10
K10
K10
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$98.80 ea
ARCH KEYSTONE Width - 150mm Height -170mm Depth - 60mm Suits Arch Profiles 145mm.
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K11
K11
K11
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$123.20 ea.
ARCH KEYSTONE Width - 170mm Height -220mm Depth - 55mm
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Customer Testimonial
Great co to deal with - excellent range, fabulous customer service, fair pricing.
Tony Saunders
Customer Testimonial
Hi Just letting you know the columns have been installed and they look great.Thank you to you and your team. Regards, David Owen
David Owen
Customer Testimonial
Great service in advising of options in picking a cornice that met our needs and timeframe, the delivery was prompt and the deliverers accommodating in where we would store it for our reno. Many thanks, appreciate your help!
Kim Fletcher
Customer Testimonial
Hi Allplasta, Just a note from Day Street, Leichhardt. The Flannel Flower cornices I ordered from you are up and have been painted and look truly wonderful. A big thank you to your team for a lovely job, I am very pleased with the result. Yours, Marian Kelly
Marian Kelly
Customer Testimonial
Delivery drivers were very helpful in unloading the cornices. Great communication with the office.
Sarah Horvath
Customer Testimonial
Allplasta are great to deal with and Andrew has been running a great business for many decades! Love the professionalism and helpful profile book!
Hurley Design and Build
Customer Testimonial
Service was excellent. Very helpful. Product was manufactured and delivered by the promised date.
Mario Essert
Customer Testimonial
Hi Allplasta, Pleased to advise that the three custom arches were installed shortly after delivery, and were a great fit. Thanks very much for the care and effort in sizing these arches. I have attached a picture showing the end of one of the installed arches FYI. regards Greg
Greg