3/8” Spirals

Caldwell’s 3/8” Spiral Balances: INSUL-TILT, SPIRO-MITE® and Enhanced 3/8” are made for tilt and non-tilt residential and commercial windows.

Caldwell’s 3/8” Spiral Balances succeeds AAMA Class 3 and has a weight capacity of 4-80 lbs.

INSUL-TILT: Single (4 to 42 lbs) & Tandem (42 to 80 lbs)
SPIRO-MITE®: Single (4 to 34 lbs) & Tandem (34 to 68 lbs)
Enhanced 3/8”: Single (35-42 lbs)

Product Features
  • Powerful spring capacity in a slim design fits into most aluminium & PVC window designs
  • AAMA Class 3, a minimum of 50% lift assistance
  • Provides consistent, smooth uniform operation throughout the full travel range of the sash
  • Broad, adjustable weight ranges providing:
    • Reduced inventory
    • Fine tune window performance
    • Field adjustable
  • Caldwell’s Music Wire Springs offer more consistent and dependable output
  • Galvanized steel tubes, providing structural strength and durability
  • INSUL-TILT: Tilt, Non-Tilt or Sideload Application: carrier dependent
  • Enhanced 3/8”: Heavy duty & pre-tensioned
  • SPIRO-MITE®: Non-Tilt and clip on available

BALANCE SIZE

3/8” (0.397)

SASH WEIGHT CAPACITY

4 lbs - 80 lbs

BALANCE LENGTH (MIN)

7 inches

BALANCE LENGTH (MAX)

51 inches

MOUNTING METHOD

Screw

SINGLE OR TANDEM APPLICATION

Single (4-40 lbs), Tandem (40-80 lbs)

COLOR

Mill, White, Black

BOX QUANTITY

100

INSUL-TILT® & 16T225 Installation Instructions

ALUMA-TILT® & INSUL-TILT® Pre-tensioned Installation Procedure

ALUMA-TILT® & INSUL-TILT® Installation Procedure

INSUL-TILT® Travel Characteristics

Enhanced 3/8” Travel Characteristics

SPIREX® & SPIRO-MITE Cross Pin Installation Procedure

SPIREX® & SPIRO-MITE Clip On Installation Procedure

INSUL-TILT® & Enhanced 3/8" Balance Range & Tensioning Chart