We are closely monitoring the coronavirus (COVID-19) situation, and as of now, GlassBuild America will proceed as scheduled, Sept. 15-17, in Las Vegas. The safety of exhibitors and attendees is our top priority, and we will follow the guidance of the Centers for Disease Control and Prevention (CDC) and public health authorities.
We have sought out experts in the meetings, trade show, and association communities, and will continue to share updates and information through and

John Evans' Sons, Inc.

Lansdale,  PA 
United States
  • Booth: 831

         John Evans' Sons, Inc., "America's Oldest Springmaker" (est. 1850), celebrates 30+ years producing Constant Force springs & window balance products with the finest quality, delivery & service.

         The newest system, the Drop-In Balance System, is available in 1/2" & 3/4" coil widths with single to triple coil combinations. Setting the new standard for window balance performance, our patented design of this high quality-low cost balance is the result of our unparalleled experience & technical expertise.

         Our Sideload Constant Force System having our patented Constant Force design, has included sash guide components visible at the top corners of the sash. These guides can now be replaced with innovative sash cams that are out of view & tamper resistant, giving your windows an improved & cleaner look. Our advanced design and technical know-how allows for a quiet, tighter fitting sash & continue to out-perform windows with block & tackle in every measurable way.

         All of our balance systems offer a substantial reduction of on-hand inventory, utilize AAMA qualified springs & provide system choices for “World Class” tilt windows.

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