The frames are made with 100% season and chemical treatment.

The strongest part of the door frame is the frame, which is attached to the brick wall with 6 to 7 clamps. If the frame is more than 4 feet wide, 3 clamps are attached on both sides and a clamp is attached on top so that the upper part does not hang. . The thickness is usually 2.25 "x 5.75" for 5 "walls. It has 3 sections, the two pieces of wood on either side are the same 6 feet long and the upper part is more or less as required. Minimum 2.5 feet and maximum Up to 10 feet. These 3 parts are connected by two doubletail joints.Before delivery we attach these joints by fevicle glue and nail, perfecting the top two 90 degree angles by two pieces of wood, one piece of wood in the middle and the other The bottom is paved with two 6-foot-long squares. The doorway between the squares has been beautified by cutting bits, and the squares have been protected from bumps so that no one is injured. The nails are firmly attached to the female part.

A groove is cut in the inner part of the square, where the door is fitted. Which is usually 0.5 "x 1.5". This groove is just cut to fit the door. When the door is closed, because of this groove, no robber can enter without breaking the door or the door frame. The door is hung by 4 to 5 hinges on one side (sometimes up to 6, depending on the size and weight of the door) and a lock and two latches on the other side. A 0.5 yarn gap is usually kept during door fitting. Which adjusts the growth and contraction of the door as the weather changes, which is very suitable for the climate of our country.

Usually two types of thick squares are used. One type is 2.25 "x 11.75" which is applicable for 5 "walls, and the other is 2.25" x 5.75 "which is applicable for 10" brick walls. The 2.25 "x 10.75" thick frame is usually used for doors to enhance the main beauty. The squares are usually made of mahogany, Burmese teak, Chittagong shilkarai, teak chambul, Chittagong teak and iron wood.

How to make squares using machines:

After air drying, the wood is seasoned in Kiln-Dry Chamber and brought to 14% moisture content, which is suitable for our country. Is.

Straightened lumber is sized using Auto 4-Side Planer machine with a size of 0.5 yarn thicker than 5.75 X 2.25.

The sized timbers are cut into 6 feet along the length of the 6 feet long timber and the head timbers are cut at the two ends according to the size of the square with a sliding 45 degree cutting machine.

We then cut the wood into auto bits and rabbits in a single pass on auto bits and rabbits.

The 6 feet long wood is cut by Male Dovetail in the Male Dovetail Cutting Machine and the head wood cut at 45 degree angle on both sides is cut by Female Dovetail Group in the Female Dovetail Cutting Machine. After that the wood is finished with Large Oscillating Drum Sander machine and finally with 4-Head Auto Brush Sander the final finishing is done. The 6-foot section of the square is attached to the upper wood with two heads of glue and nails. To keep the upper two angles 90 degrees, two wooden braces are fitted with iron between the 6 feet long squares from the upper part. Two more wooden braces are fitted right in the middle and 2 inches above the bottom, keeping the inner gap perfect. The squares are chemically treated before these 4 braces are fitted. After 24 hours, when the wood absorbs the chemicals and the outer layer dries, they are lined and polished.

After applying the brace, the outer part of the square which is attached to the wall with clamps is covered with bitumen. After fitting the frame, the braces are applied till the curing is done. After curing, the braces are removed. After that we do the final polish while fitting the door on the square.

The woods we use for the squares are:

Chittagong Shil Karai (from Chittagong)

Burma Tick (from Burma)

Chittagong Tick (from Chittagong)

Tick Chambul (from Burma)

Mehgini (from Jessore)

Squares are usually of two sizes.

2.25 ”X 5.75” (for 5 ”brick masonry)

2.25 ”X 10.75” (for 10 ”brick masonry)

Using 10 "brick masonry 2.25" X 5.75 "thick squares can win.

Squares are usually of 4 sizes