Stackable Cast Iron Sash Weights

Manufacturer: SRS Hardware

(2 customer reviews)

Note: Due to the heavy nature of this item, a custom shipping quote for each order must be calculated.

$2.10 per pound

Please complete our weight request form and we will email you with a job quote.

SKU: CW Category:


SRS offers cast iron stackable sash weights in 1, 3 and 5-pound increments for use in sash with a minimum thickness of 1-3/4″. The stackable feature allows you to easily optimize the weights to match sash weight with minimal waste.

The 1-3/4″ square cross section allows for the greatest weight in a given weight pocket (a crucial consideration when dealing with heavy, wide or insulated units.)

When selecting weights remember; the weight cross section should never exceed the thickness of your sash. Following this rule will ensure that the weights will have adequate clearance and will not collide with one another. This condition is unacceptable and can cause the window to not function.

If you need to determine the length of any given set of stackable weights you only need to add the 1” pyramidal top once, as all of the other tops nest into the weight immediately above.

Lengths; 1 lb weight: = 1-1/2″ L. (plus pyramidal top); 3 lb = 3-1/4″ L. (plus pyramidal top); 5 lb = 7″ (plus pyramidal top).

Case pricing assures our customers the very best price of $2.10/lb and all sizes are kept in stock for immediate shipment.

    Stackable Iron Weights Quotation Request

    Enter number of cases

    Enter number of cases

    Enter number of cases

    Additional information


    $2.10 per pound

    Case Size

    Case CW 1 40: 1lb weights, 40 pcs
    Case CW 3 16: 3lb weights, 16 pcs
    Case CW 5 8: 5lb weights, 8 pcs


    Cast Iron


    All weights are 1-3/4” square in section. Iron and lead weights stack together.


    SRS Hardware

    2 reviews for Stackable Cast Iron Sash Weights

    1. Carl Bagala

      Project Supervisor
      We were hired to fix a number of double hung windows which weren’t operating because someone installed heavy plate glass. The original 12 lb weights were no longer doing the job and we estimated that 18 lbs of weight per side were now required. We chose SRS square stackable weights due to the limited space. A stack of 3 – 5 lb and 3 – 1lb weights gave us the 18 lbs we guessed were needed. In fact, that was just a bit too much weight, so in the end we removed one of the 1 lb weights on each side and easily achieved “finger tip” operation!

    2. Ernesto Ayala

      Project Engineer
      These weights are great to work with and come in multiple sizes to accommodate whatever loading you need. Highly recommend SRS and these sash weights.

    Add a review

    Your email address will not be published. Required fields are marked *

    CW 1 Presentation Sheet

    SRS Hardware CW 1 Stackable Iron Weights Presentation Sheet

    Download the CW 1 Presentation Sheet

    CW 3 Presentation Sheet

    SRS Hardware CW 3 Stackable Iron Weights Presentation Sheet

    Download the CW 3 Presentation Sheet

    CW 5 Presentation Sheet

    SRS Hardware CW 5 Stackable Iron Weights Presentation Sheet

    Download the CW 5 Presentation Sheet

    "Justin, thank you! The replacement lifts arrived and they’re absolutely Perfect!  I really appreciate your help with this. Best, David C."

    -SLC 40 recessed sash lifts
    More Testimonials

    You may also like…