30" Caldwell Series 300 5/8" Channel Block & Tackle Window Balance - Stamp 29-9
30" Caldwell Series 300 5/8" Channel Block & Tackle Window Balance - Stamp 29-9
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WRS

30" Caldwell Series 300 5/8" Channel Block & Tackle Window Balance - Stamp 29-9

4.2 stars out of 5 reviews
(4.2)|
5 ratings
30" Caldwell Series 300 5/8" Channel Block & Tackle Window Balance - Stamp 29-930 Caldwell Series 300 5 8 Channel Block Tackle Window Balance Stamp 29 930 Caldwell Series 300 5 8 Channel Block Tackle Window Balance Stamp 29 530 Caldwell Series 300 5 8 Channel Block Tackle Window Balance Stamp 29 230 Caldwell Series 300 5 8 Channel Block Tackle Window Balance Stamp 29 630 Caldwell Series 300 5 8 Channel Block Tackle Window Balance Stamp 29 130 Caldwell Series 300 5 8 Channel Block Tackle Window Balance Stamp 29 4
Size:29-9 (35-38 lbs)
Actual Color:Metal

Key item features

  • ENGINEERED FOR NON-TILT WINDOWS – Designed for side-load, non-tilt window systems with a standard 5/8″ metal channel, commonly used in vinyl and aluminum single- or double-hung frames. This balance measures 30" inches in length and supports 35-38 lbs sashes. Each balance arrives pre-assembled with top and bottom guides attached, so installation is fast and frustration-free—no special tools required.
  • AVAILABLE IN LENGTHS FROM 8″ TO 49″ (3 TO 44 LB RANGE) – The Series 300 fits nearly all non-tilt window sizes, from light residential sashes to heavy commercial frames. Covers a complete range of lengths and weight ratings for versatile use. Each balance is precision-tested for smooth, reliable performance and long-term durability. Sold individually; accessories and hardware not included. Contact WRS if your exact size isn’t listed.
  • SMOOTH, SAFE & SECURE OPERATION – The Series 300’s precision pulley and spring system balances the sash to prevent slamming or sticking, keeping windows steady at any height. Designed for quiet, reliable performance in homes, schools, and offices where safety and ease of use matter every day.
  • HEAVY-DUTY GALVANIZED STEEL CONSTRUCTION – Crafted from high-strength galvanized steel for long-term durability and corrosion resistance. Precision pulleys and springs maintain smooth lift through thousands of cycles, ensuring reliable performance for years of daily use. Built tough for pros yet simple enough for DIY installation.
  • TRUSTED SINCE 1989 – WRS Window Repair Systems has over 30 years of experience supplying reliable, high-quality hardware. Trusted nationwide by homeowners, contractors, schools, and property managers for dependable repairs and long-lasting performance.
Current price is $19.69
Price when purchased online
  • Free shipping
  • Free 30-day returns

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Columbus, 43215
Arrives by Thu, Apr 16
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Sold and shipped by Wholesale Product Supply
4.8125 stars out of 5, based on 32 seller reviews(4.8)
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4.2 out of 5 stars
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Showing 1-2 of 2 reviews

Aug 20, 2025
Michael
Sold and shipped byWholesale Product Supply
5 out of 5 stars review

Verified Purchase

Window fixed

Perfect fit..I used my old part as reference..easy install

Helpful?6IE29TI0YCH0948098233
Oct 30, 2024
Tralfaz
Sold and shipped byWholesale Product Supply
5 out of 5 stars review

Verified Purchase

Good product that is priced well.

I have used dozens of these to fix original contractor grade windows made in the early 2000s. These cartridges have a guide which prevent fouling of the lines between the spring and anchor point. Great price!

Helpful?6IE29TI0YCH0948098233