Water-Filled Anchor Weight – 40kg Capacity — Outdoor Cinema Pro

Air Blowers & Anchors

Water-Filled Anchor Weight – 40kg Capacity

$149.00 AUD

A water-filled PVC anchor weight for securing inflatable screens and temporary structures on hard surfaces. Sold as a single unit.

  • Holds 40kg of water when filled
  • Heavy-duty UV-stable PVC
  • Built-in tether point / D-ring
  • Single anchor (screens need minimum 4)

Buy online for delivery Australia-wide, or request a tailored quote — we’re happy to spec a package for your site.

Overview

A 40kg-capacity water-filled anchor, sold as a single unit. This is the standard capacity for smaller inflatable screens, gazebos, marquees and temporary signage on surfaces where you cannot use pegs.

Where the 40kg size fits

It covers the everyday case: a smaller screen, on a reasonably sheltered site, for an evening. Filled, it is still a two-hand lift, but it is meaningfully easier to move and reposition than the 80kg unit — which matters when you are placing four of them around a screen and adjusting as you tension. Step up to the 80kg capacity for larger screens or exposed, windy ground.

How it works on site

The bag is heavy-duty UV-stable PVC — compact and light to transport empty, then filled on location from a tap or hose. A moulded D-ring takes your rope or ratchet strap. Nothing penetrates the surface, so it works on concrete, pavers, decking and synthetic turf, and leaves no trace once drained.

This listing is a single anchor. Inflatable cinema screens require at least four anchor points, so if you are outfitting a screen from scratch the 40kg Set of 4 is the more economical starting point.

Why these anchors

More than a screen anchor

A water-filled PVC weight that holds your gear down without pegs — and folds away to nothing when the night’s over.

A water-filled anchor securing an outdoor structure

Holds down more than screens

Built for inflatable cinema screens, but just as at home anchoring marquees, gazebos, banners and event signage — anywhere you need ballast on a hard surface where you can’t peg into the ground.

  • Inflatable cinema screens
  • Marquees, gazebos & tents
  • Banners, flags & signage
  • Any temporary structure on concrete or pavers
A water-filled anchor folded flat for storage

Collapsible — packs flat

Empty, it folds down to a flat sheet of PVC that stows in a corner of the trailer. No rigid, space-hungry blocks to find room for between events.

  • Folds flat when empty
  • Stacks and stores in seconds
  • A fraction of the space of solid weights
Filling a water anchor from a hose on site

Fill on site — no heavy lifting

Fill it from a standard hose when you arrive and tip it out when you leave. You move an empty bag, not a block of concrete or steel — easier on your back, your vehicle and your load limits.

  • Fills from any garden hose
  • Travels empty and light
  • No concrete, steel or sand to haul
  • Built-in D-ring for ropes, straps or carabiners

Specifications

Key Features

Holds 40kg of water when filled
Constructed from heavy-duty, UV-stable PVC
Easy to fill and drain on location
Compact and lightweight when empty
Suitable for inflatable screens, gazebos, or temporary signage
Ideal for areas where pegs are not allowed or practical

Frequently asked questions

How many anchors does an inflatable screen need?

At least four — one per corner. Then size the total ballast to the screen and the wind. As a guide from our wind-load estimates, four 40 kg anchors suit a 3–4 m screen in gusts to about 30 km/h, four 80 kg anchors cover a 4 m screen in stronger gusts or a 5–6 m screen in lighter ones, and larger screens or exposed sites want more. Err on the side of extra ballast — the full table is in our anchoring guide.

Why use water anchors instead of pegs?

On hard surfaces — concrete, pavers, decking or indoors — you can’t drive pegs into the ground. Water anchors give you the same hold-down without marking the surface, and they’re kinder to turf than stakes.

How are they attached to the screen?

Each anchor has a built-in tether point / D-ring; connect it to the screen’s anchor points with ropes, ratchet straps or carabiners.

Can I use them for marquees and other structures?

Yes — they suit marquees, gazebos, banners and signage too, anywhere you need ballast without pegging in.

How heavy are they to move?

You only ever carry them empty — fill on site from a hose and empty before pack-down, so there’s no lifting of solid weights.

Planning an outdoor screen or LED installation?

Tell us about your site and audience. We scope, supply and support outdoor cinema and permanent LED systems Australia-wide.