Fiberglass Hole Former Information Sheet

Standard Fiberglass Hole Formers

• Available in sizes from 8" to 56" diameter for 36", 48", 60",72" and 96" inside diameter manholes.
• Special wall thickness available. Contact our Customer Service Department for details.

Straight Wall Fiberglass Hole Formers

• Available in sizes from 8" to 56" diameter.
• 3" to 8" wall thickness (standard)

Parallel Hole Formers

• Designed to provide 8" and 11" parellel holes in most standard pump/left stations, manholes and wet wells.
• Set up for standard 26.25" center to center spacing.
• Available for 48", 60", 72", 84" and 96" inside diameter structures.

MAGNA-FORMER Magnetic Hole Former System

MAGNA-FORMERS are patented fiberglass hole former shell with high strength magnetic inserts. They are interchangable magnets inserts for either our Fiberglass Hole Formers or PRO-FORMER (see PRO-FORMER product section) high density polyethelene hole former that provide precasters with the easiest and most cost effective way of holding hole formers in place. Magnets are interchangale so that one magnet can do all sizes of hole formers. MAGNA-FORMERS provide the following Precaster benefits:

• Eliminate usinf wire to tie hole formers to cage.
• No need for holes in forms.
• No more moving or floating hole formers.
• No need to screw or bolt hole formers to forms.
• Easy positioning and removal.
• Saves time and money.

MAGNA-FORMER Sizes

• 8" to 28" diameter
• 36" to 72" inside diameter manholes
• 3" to 8" straight wall structures
• Two magnets are required for 18" and above Fiberglass Hole Formers
• Only one magnet is required for use with our PRO-FORMER polyethelene hole former