Sparka S-20 Silver Overhead Door Closer and Back Check Valve
SKU: 38544866070

Sparka S-20 Silver Overhead Door Closer and Back Check Valve

$31.86 $35.40
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Description

Sparka S-20 Silver Overhead Door Closer and Back Check ValveThe Sparka S 20 Overhead Door Closer is an EN variable power size 2 4 door closer making it suitable for doors upto 1100mm wide or maximum 80 Kg. This door closer comes complete with mechanism, cover, armset, parallel arm bracket for mounting on the 'Push' face of the door, installation template and all fixings. The closer has integrated adjustable valves to independently control the closing and latching speeds. Also with integrated Back Check valve

The Sparka S-20 Overhead Door Closer is an EN variable power size 2-4 door closer making it suitable for doors upto 1100mm wide / or maximum 80 Kg. This door closer comes complete with mechanism, cover, armset, parallel arm bracket for mounting on the 'Push' face of the door, installation template and all fixings.

The closer has integrated adjustable valves to independently control the closing and latching speeds. Also with integrated Back Check valve which provides a cushioning effect for when the door opens too fast.

It is suitable for timber fire doors up to 60 minutes. The product has been indepently tested to meet and exceed fire door testing requirements and is backed by a 10 year guarantee for peace of mind.

Supplied With:

  • 1 x Door Closer,
  • 1 x Armset,
  • 1 x Parrallel arm bracket,
  • Supplied with fixings

Key Features:

  • Designed using Rutland Technology
  • Max Door Weight: 80Kg
  • Max Door Width: 1100mm
  • Power Adjustable by Spring EN2-4
  • 10 Year Guarantee
  • Precise door control with adjustable latch, closing speed & backcheck valves
  • Dual handed & universal fixing pack for push or pull side mounting
  • Full colour installation instructions improve speed and accuracy
  • Universal Installation - Suitable for inward & outward opening doors
  • Architectural Semi-Radius Cover to improve aesthetics and limit vandalism
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 38544866070

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4.4 ★★★★★
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Vincent Marias
Houston, US
★★★★★ 5
The Bible, if it was good
Format: Hardcover
I’m not kidding when I say the first 350 pages of this book are quite literally an entire computer science degree. In fact, many CS majors would learn more about some of these subjects here than in their classes. I’m incredibly impressed with the thoroughness and depth of this absolute tome, and I’ll be far more impressed if the binding is able to hold on to all 1200 pages for the whole time it takes me to read it.
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Reviewed in the United States on October 29, 2024
J
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Joan Rubio
Dallas, US
★★★★★ 5
Imprescindible
Format: Hardcover
Libro esencial para entender aspectos técnicos y completar la formación de los estudios universitarios .
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 15, 2025
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Piotr S.
Waukegan, US
★★★★★ 5
good quality
Format: Hardcover, Format: Hardcover
Content is top notch as always. My 5-stars go mainly to reflect print quality of the book. Text is nice and clear, binding is done in proper cloth spine binding as you would expect from hardcover edition. Ordered my book on Feb 5th, 2019 and received it on Feb 11th, 2019. The book feels solid not like to fall apart right away. No issues like those reported for "Real-Time Rendering, 4th Edition" or "Physically Based Rendering: From Theory to Implementation 3rd Edition" or "3D Math Primer for Graphics and Game Development, 2nd Edition". This one is a keeper, so sad some other CG books had to go beacuse of the quality "issues".
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 13, 2019
T
Verified Purchase
Tyler aldrich
Los Angeles, US
★★★★★ 4
An Invaluable Book
Format: Hardcover, Format: Hardcover
Game Engine Architecture" by Jason Gregory has proven to be a treasure trove of knowledge, especially in the realms of lower-level computer programming and the inner workings of CPUs. The first third of the book, which I have thoroughly enjoyed, dives deep into the intricacies of memory management and concurrent programming. Gregory’s explanations are so lucid and engaging that the complex concepts of memory orders such as relaxed, release, and acquire have become clear to me, showcasing their critical roles in programming. What is particularly remarkable is how the book's first 400 pages serve not just as a guide to game engine architecture, but also stand on their own as an excellent introduction to computer science. It's a testament to the author's skill in distilling complex material into digestible content that even those without a vested interest in game development would find immense value in. However, a caveat I must mention is the book's physical heft. Its size and bulk make it somewhat unwieldy, and I learned this the hard way when it fell from my desk. The impact caused the page binding to tear away from the hard cover, which was disappointing considering the book's cost. Nevertheless, with some craftiness involving thick drawing paper and glue, I managed to repair it. If the author adds any more information to the next edition, it'd probably be best to turn this into a 2-3 volume set to manage the size. Despite this setback, the book remains an invaluable resource. Its depth and clarity are unmatched, making it a worthy addition to any tech enthusiast's library. Just be sure to handle it with care.
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Reviewed in the United States on November 11, 2023
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ghostwriter
Carnegie, US
★★★★★ 5
Much thicker than I expected!
Format: Hardcover
This book is massive and could easily be split into two or three volumes, which is great because it covers a very deep topic. It will be a while before I read the book from cover to cover, but the few chapters I've skipped to were able to help me immediately on some problem areas in a game engine that I built last year. I would definitely recommend this to anyone interested in video game development.
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Reviewed in the United States on June 14, 2021

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