Please measure your medium frames before ordering.
Some manufacturers make frames slightly smaller than the standard Langstroth medium frames when it comes to the inside window dimensions. SimplKomb was designed to fit inside window of standard Langstroth medium slotted frames that have a 17' x 5-1/4" space on the inside of the top, bottom, and side bars.
After a bit of research we have learned some manufacturers wood dimensions vary, causing the inside window dimensions to vary. Typically, this issue pertains to the bottom bar width. Frames with a 3/8ths of an inch bottom bar measurement accommodate SimplKomb with ease. Frames with a bottom bar measurement of 1/2 inch are too snug.
Frames that work with SimplKomb:
Frames that DO NOT work with SimplKomb:
Please understand that we cannot manufacture this product to fit all possible variations.