In-Ground
20-foot-sectional-flagpole
20-Foot Sectional Aluminum Flagpole
In-Ground
FPA020AS
The 20-foot sectional aluminum is the most common choice for a first real in-ground flagpole. It looks like a proper commercial pole — tapered shaft, gold ball finial, properly proportioned — but the foundation is a ground sleeve set in a basic residential-scale concrete footing. Most homeowners and small business owners handle it themselves.
Commercial appearance
Ground sleeve included
18-foot installed height
Available with Canadian flag
18'
Installed height
2.5"
Butt diameter
12"
Hole diameter
3x6
Recommended flag
The 20-foot sectional aluminum is the most common choice for a first real in-ground flagpole. It looks like a proper commercial pole — tapered shaft, gold ball finial, properly proportioned — but the foundation is a ground sleeve set in a basic residential-scale concrete footing. Most homeowners and small business owners handle it themselves.
The actual installed height once the ground sleeve is set is 18 feet, which is the right scale for a church, a sports club, a small business, or a residential property with a bit of frontage. At 18 feet, a 3x6 flag is visible from the road without requiring a commercial foundation or installation crew.
Available as the pole only (FPA020AS), a CTC version (FPA020CT), or paired with a 3x6 Canadian flag (FPA020WF). The ground sleeve and all installation hardware are included. The installation itself is a post-hole-digger job — 12 inches diameter, 36 inches deep, with the ground sleeve set in concrete before the pole is assembled.
Ideal for:
Small businesses, churches, sports clubs, community halls, residential properties wanting a commercial-look pole, and first-time in-ground installations.
Foundation Requirements
Foundation Diameter:
12 inches
Foundation Depth:
36 inches minimum
Concrete Spec:
Anchor Bolts:
Standard residential mix
N/A — ground sleeve install
The minimum depth assumes compacted soil. The Building Code typically requires footings below the frost line — generally a minimum of 4 feet (48") below finished grade. Consult your local municipality if in doubt. The anchor cage shipped with the pole is designed for a 4'–6' minimum depth.
Installation Overview
Engineering drawings and full installation instructions ship with the pole. This is a summary for planning purposes.
01
Dig and Pour
Auger or excavate a 26" diameter hole to 44" minimum depth. Bed in gravel, set anchor cage, pour 3,000 PSI concrete. Allow 7 days full cure (or 1 day with quick-set).
03
Walk the pole up
Assemble pole horizontal. Attach hinge pin to base. Two or three people walk the pole up to vertical from the hinge side. Secure the two non-hinge bolts.
02
Level the base
Once cured, thread leveling nuts onto anchor bolts. Place the hinge base plate over the cage, shim level in both directions, and secure with washers and large nuts.
04
Rig and Install
Verify halyard through cam cleat, attach counterweight and snaps, thread the ball finial, install flash collar. Apply silicone bead at collar top. Raise your flag.