Shademaker Astral: Premium Centerpost Patio Umbrella
Designed with superior durability and performance in mind, the Shademaker Astral 13’ Square Centerpost Umbrella offers expansive shade to any outdoor living space. This telescoping umbrella opens and closes easily over tables and chairs with only a few simple rotations of the removable crank. Plus, it's built from commercial-grade fasteners, aluminum hubs and fittings, and a galvanized steel stem so that you can enjoy a durable, stylish, and weatherproof umbrella for years to come.
Available in a variety of contemporary colors and neutral tones, Astral is made from 100% solution-dyed acrylic and polyester fabric, woven by two of the most popular names in outdoor fabrics: Sunbrella® and O'Bravia®. These premium materials offer superior resistance to corrosion, mildew, fading, wear, and tear, making this umbrella perfect for any commercial, market, or residential space.
Also available in 16.5' Square and 16.5' Octagon models.
Why Choose the Astral 13' Square Centerpost Umbrella
1. Telescoping Mast
Designed with a telescoping center mast so that you can close the canopy smoothly over tables or seating areas without needing to move any furniture. Ideal for restaurants, lounges, and commercial patios where fixed layouts are common.
2. Quick & Effortless Crank Lift System
Integrated with a user-friendly crank lift system so that opening and closing the umbrella takes just a few easy turns, offering smooth operation and reliable performance with minimal effort.
3. Premium-Grade Aluminium Hub & Fittings
Constructed with precision-machined aluminium hubs and fittings so that you get solid structural support that resists rust and wear, even in busy or exposed outdoor spaces.
4. Commercial-Grade Canopy Fasteners
Fitted with reinforced canopy fasteners so that your canopy stays securely attached during strong winds or heavy use, while also contributing to a clean, tailored look.
5. Removable Crank Handle
Equipped with a removable crank handle so that you can protect the mechanism from unnecessary wear or tampering, especially in shared or public areas. It also makes for a more streamlined appearance when not in use.
6. Galvanized Internal Mast Stem
Features a galvanized steel inner mast so that you gain extra strength and corrosion resistance, making it ideal for long-term installations—even in coastal or humid environments.
7. Includes Aluminium Mast Stem Cover
Comes with a custom-fit aluminium cover so that the mast is protected from sun, rain & debris, while maintaining a modern, professional finish that complements any setting.
8. Includes High-Performance Protective Cover
Supplied with a weather-resistant cover so that your umbrella stays clean and protected when not in use—helping to extend its life and reduce maintenance over time.
NOTE: Images displayed above may feature both square and octagon canopy options to demonstrate lifestyle settings and mounting/base options. Additional color options are available upon request. Check them HERE or CONTACT US for details.
What's Included
- Astral 13 ft. Square Centerpost Umbrella
- Protective Cover
- Mounting Kit Options
- Concrete Mount Kit
- In-Ground Mount Kit
- Base Weight Options
- 715 lbs Infinity Steel Base
- Titan Steel Base
- Z-Plate with or without Wheels
- 715 lbs Infinity Steel Base
Mounting Kits and Base Weights Explained
Choose the right support system to keep your Patio Umbrella stable and secure in any setting. Opt for a permanent mount kit for a secure, fixed installation or a freestanding base for flexibility and easy repositioning.
Check the Base Weight Matrix for the recommended base weight and alternative options.
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Concrete Mounting Kit
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Plate Dia. - 8.46" | Thickness - .63" | Weight - 7.76 lbs Includes: Adapter plate and expansion bolts. |
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In-Ground Mounting Kit
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Plate Dia. - 8.46" | Thickness - .63" | Weight - 6.62 lbs Includes: In-ground fitting |
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Infinity Base
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Item No: BXI715 | Weight: 715 lbs. Size: 44.5” x 44.5" x 1.8" Finish: Shadow Graphite, Architectural Bronze, and Arctic White Galvanized Steel Frame + Aluminum Lid, Galvanized Steel Plates Check Product Page HERE. |
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Titan Base
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Item No: BGT850 | Finishes: Shadow Graphite, Architectural Bronze, and Arctic White Weight: 118.1 lbs. | Size: 40.5" x 40.5" x 6.4" Galvanized Steel Frame + Aluminum Lid Accommodates (32) 12″x12″x1.5″ pavers (Not Included). Check Product Page HERE. |
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Z-Plate
Z-Plate with Wheels
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Sold Separately Note: You need a set of (1x) ZB115 + (2x) ZB225 Z-Plates for Astral 13'. Check Product Pages HERE: ZB115 and ZB225 Finishes: Shadow Graphite, Architectural Bronze, Arctic White, and Sand Total Weight: 565 lbs -- Can be purchased with Wheels (ZBWH-LG) Weight: 6.61 lbs. | Diameter: 4" |
Product Specification
Below are the key dimensions of the Astral 13' Square Centerpost Umbrella.

| Key | Description | AST-40S |
| Canopy Shape |
Square | |
| Coverage | 172 sq ft | |
| Ribs | 8 | |
| Size | 13 ft | 4.0 m | |
|
A |
Lower Hub Height (Open) |
7’ 4” ft | 2.2 m |
|
B |
Rib End Height (Open) |
7’ 7” ft | 2.3 m |
|
C |
Canopy Length (Diagonal) |
18’ 6” ft | 5.6 m |
|
D |
Canopy Width |
13’ 1” ft | 4.0 m |
|
E |
Overall Height (Open) |
9’ 1” ft | 2.8 m |
|
F |
Overall Height (Closed) |
12’ 6” ft | 3.8 m |
| G | Rib End Height(Closed) | 3’ 3" ft | 1.0 m |
| H | Height to Crank Handle | 3’ ft | 0.9 m |
| Min. Base Weight | 500 lbs. |
Product Resources
For more information on specifications, manuals, warranty, technical sheets, and maintenance, refer to the following resources:
Shipping & Returns
We ship across the contiguous United States. Shipping to Alaska and Hawaii may be available on request.
Estimated delivery timing is shown above for each product.
Smaller items ship via parcel carriers. Larger items are delivered curbside or via scheduled freight.
Optional services such as inside delivery & package removal, and assembly may be available at checkout.
Returns are accepted within 30 days of delivery for eligible items.
Please note:
- Umbrellas and related accessories are non-returnable unless faulty or damaged
- Select large furniture items are not eligible for return once shipped unless faulty or damaged
- Large items may incur return shipping and handling costs
For full details, please see our Shipping and Returns & Refunds policies.






