SQUARE FOOT Model SF28 Plastic Footing Form 28 in. x 20 in. x 28 in.， is an engineered pre-fabricated plastic footing form， rigorously tested meeting all building code requirements， used in conjunction with either an 8 in.， 10 in. or 12 in. diameter construction tube， which jointly provides for no cold joints， ribs in the footing for structural integrity， air vent holes - no pockets， providing for the safety， strength and stability for your project. Excavation and placement of the footing and forming tube， backfilling and concrete pour can happen in just a few hours. Four parallel footing sidewalls and structural points of contact to the base， also easily facilitates the use of rebar without custom fabrication delivers easy leveling and offers future expansion of a deck (as an example) to a sunroom or future home addition. In areas with frost， a 6 in. minimum footing thickness produces a thicker footing which decreases uplift and lateral movement caused by frost heave and high velocity winds. The SF28 uses 4.5 cu. ft. of concrete， equivalent to 7 lb. - 80 lb. bags easily found in the same concrete department.

SQUARE FOOT is the perfect combination of toughness and stiffness， made from polypropylene

Our square design provides greater structural integrity with 4 points of contact to the ground， which makes it easier to level

SQUARE FOOT footings provide a strong enough foundation to allow for future flexibility to expand a deck to a sunroom or living area

Our user friendly wedge system on all three products fits all 8 in. to 18 in. construction forming tubes forming one continuous concrete pour for the footing and column form

No concrete forms to build， disposable footing， can be left in ground after placement， enabling excavation， backfill and pouring of concrete in one day

SF28 is 7 lbs. which can be nested when buying multiple units which provides for easy shipping and transportation

Resists frost and uplift from high velocity winds minimum 6 in. base thickness reduces lateral movement caused by frost or poor soil conditions

Each unit can support anywhere from 5，440 lbs. to a maximum bearing capacity of 65，280 lbs. depending on soil types

Meets and exceeds all national building code requirements in North America， SQUARE FOOT has met requirements of the IAS accreditation criteria for testing laboratories (AC89)

SF28 unique square design convers a 5.45 sq. ft. area without the flange which can be filled 4.5 cu. ft. of concrete