Window and door profiles: starting from the frame

Profile enquiries work best when they start from the window or door frame, not from a series name alone.

Tianjin Kemitol Plastic Products Co., Ltd.
Manufacturer of a full range of PVC fences and UPVC profiles, as stated on the company website.
No. 80 Jinyu Road, Beichen District, Tianjin, China
+86 130 1888 0051 / [email protected]

The company website states that custom window-door profiles are available, and the UPVC profiles index on this site lists the window, door, and decorative ranges. A window or door profile enquiry should begin by describing the frame: the type of window or door, the opening it fits, and whether it must match an existing section or can be a new design. Those three facts let the supplier point to a series, or discuss a custom section, without guessing from a name list. A buyer who starts from the series name alone risks ordering a section that does not fit the frame, because the series names on this site are labels, not dimensions.

Custom work deserves a careful enquiry. The word custom on the company website suggests that non-standard frames can be discussed, but the scope, the information needed, and the quantities involved are all matters for the supplier to confirm. A drawing, a photograph of the existing frame, or a sample section, where available, will help the supplier far more than a written description alone, and the enquiry should state whether such material can be supplied. Quantities matter too, because a custom section for a single window is a different discussion from a custom section for a housing project.

Series names and section information

The five series names on the series page, 60, 65, 80, 88, and 92, are the company website labels, and this site does not state what any number in a name measures. A buyer who needs section information should ask for it by series name, for the specific frame in question, and should treat the supplier reply as the specification for that series. That discipline protects against the most common profile error, which is to assume that a larger number means a larger or stronger section, and then to order on that assumption.

Matching an existing section is a special case that deserves its own note. Where a profile must replace or extend an existing frame, the enquiry should include the existing section as a drawing, a photograph with a scale reference, or a sample, and should state the quantity and the urgency. The supplier can then confirm whether a company website series matches, whether a custom section is needed, or whether no match is available, and that answer, even when it is negative, saves the cost of an incorrect order. The checklist below gathers the frame questions for a first enquiry.

Profiles, glazing, and hardware as one system

A window or door profile does not work alone, and a profile enquiry should acknowledge the system it belongs to. Glazing, hardware, seals, and fixings all interact with the profile section, and a section that suits one glazing thickness or one hardware set may not suit another. The enquiry should therefore state, where known, the glazing and hardware intentions alongside the frame description, so that the supplier can advise on a series that suits the whole system, not only the frame outline. Where glazing and hardware are not yet decided, stating that fact is itself useful, because the supplier can then advise on the range of options the series supports.

Replacement profiles raise the system question in a sharper form, because an existing window already has glazing and hardware that the new section must work with. A sample of the existing section, or a photograph with a scale reference, together with notes on the glazing and hardware, gives the supplier the system picture needed to judge a match. Without that picture, even a correct-looking section may fail against the existing glazing or hardware, and the cost of that failure falls on the buyer.

Questions to settle in your enquiry

  • What type of window or door is the profile for?
  • Which series name, if any, already applies?
  • Can a drawing, photograph, or sample of the frame be supplied?